ASUS P6X58D-E Motherboard Performance |
Reviews - Featured Reviews: Motherboards | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Written by Olin Coles | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Thursday, 17 June 2010 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ASUS P6X58D-E Motherboard ReviewWhenever I shop for a car, my first choice is the base model. I don't need a sun roof, heated seats, or a Bose stereo system. The price for a factory-installed GPS system could buy me the best aftermarket navigation with money left over for a high-power stereo and top-end speakers. Essentially, I don't need the frivolous extras that might never get used or could be purchased aftermarket for less. The same is true for computer motherboards: we don't all need dual Gigabit Ethernet network adapters, and the pre-loaded Linux system on a chip is nice but hardly necessary. ASUS has already earned our praise for their ASUS P6X58D-Premium motherboard. As the name implies, this exceptional X58-Express motherboard comes loaded with everything that could fit the circuit board... and a premium price to match. The ASUS P6X58D-E motherboard is exactly what enthusiasts want: more for less. It's nearly identical to the ASUS P6X58D-Premium version, but makes minor sacrifices to help drive down the price. In this article, Benchmark Reviews tests the affordable ASUS P6X58D-E motherboard against a collection of other Intel X58-Express enthusiast solutions to measure graphics, processor, memory, and SSD storage performance. ASUS has been a longtime partner to Intel, and both companies have been made better because of their relationship. But when it comes to new technology, sometimes Intel takes a little too long to implement change while ASUS prefers to offer their faithful consumers the options right away. Intel's tick-tock plan doesn't coincide with the technical improvements made to areas outside of processor development, such as SuperSpeed USB-3.0 or Revision 3.x SATA 6.0-Gbps (aka SATA-III) controllers. Most hardware enthusiasts agree that it's awkward to see Intel's "Enthusiast" branded X58-Express chipset paired to older standards while "Mainstream" P55 motherboards enjoy the better and faster new ones. ASUS feels the same way, and offers their P6X58D-E motherboard to forward-thinking enthusiasts who might not want to wait for the launch of Intel's X68-Express platform.
SuperSpeed USB-3.0 is an appropriately named technology, and several file transfer tests during the 2010 CES demonstrated the impressive 5Gbps signaling rate. Although USB3 devices won't compete with third-generation SATA6G interface in terms of operational file transfers, SuperSpeed USB easily beats bandwidth performance from the older second-generation SATA-3Gbps controllers. This is precisely why ASUS has incorporated the NEC D720200F1 SuperSpeed USB-3.0 chip on their P6X58D-E motherboard. Revision 3.x SATA 6Gb/s (SATA-III) has also been added onto the X58-Express platform, allowing performance enthusiasts to enjoy faster top-end bandwidth speeds from capable Solid State Drive storage devices. Instead of waiting for Intel to add SATA-6G support into their upcoming X68-Express platform planned for 2011, ASUS includes functionality on the P6X58D-E Intel X58-Express motherboard right now by utilizing the Marvell 88SE9128 SATA 6Gb/s controller with RAID-1/0 support. Generally speaking, system performance will generally be the same between X58-Express platform motherboards. Individual graphics, memory, processor, and storage performance should each deliver results approximately equal to tests on each brand and model of X58 motherboard... unless the manufacturer has introduced technology or changes that might penalize the pipeline performance. This project compares three X58-Express motherboards: the original Gigabyte X58-series against their new X58A-series, as well as the ASUS P6X58D-E and P6X58D Premium models. This article will concentrate on the differences that exist between X58-Express products, since the added features are all that differentiate these motherboards. About ASUSTeK Computer Inc.ASUS comes from the last four letters of Pegasus, the winged horse in Greek mythology that represents the inspiration of art and learning. ASUS embodies the strength, creative spirit and purity symbolized by this regal and agile mythical creature, soaring to new heights of quality and innovation with each product it introduces to the market.
ASUSTeK Computer Inc., also known as ASUS, a technology-oriented company blessed with one of the world's top R&D teams, is well known for high-quality and innovative technology. As a leading provider of 3C (computers, communications and consumer electronics) total solutions, ASUS offers a complete product portfolio to compete in the new millennium. To succeed in this ultra-competitive industry, great products need to be complimented by speed-to-market, cost and service. That's why all 100,000 over employees of ASUS strive for the "ASUS Way of Total Quality Management" to offer the best quality without compromising cost and time-to-market while providing maximum value to all customers through world-class services. Intel Core i7: PlatformThe ASUS P6X58D-E motherboard is built specifically for LGA1366 Intel Core-i7 desktop processors. The feature highlights for all current Core-i7 processors is:
What is Nehalem Technology?The Intel Core i7 microprocessor is built using the codename "Nehalem" micro architecture, that allows chips to handle more data, quicker and more energy efficiently. Go inside Intel's labs and meet some of the thousands of Intel engineers who helped design and test the new processor. "Building this microprocessor brings a lot of people together, like architects, micro architects and the design teams," says Rani Borkar, vice president of Intel's Digital Enterprise Group. "As you get into the development phases, working with the process technology, it's a mind-boggling effort that requires a lot of teamwork across the board." Before going into the specifications and features of the entire Intel Core i7 processor series we thought some background information about the new Nehalem technology might be in order. While doing research for this review I came a cross a very useful document on Intel's website entitled: "First the Tick, Now the Tock: Next Generation Intel Micro-architecture (Nehalem)". This white paper article helped me to gain a much better understanding of not only the features we'll see today in the Core i7 series of processors, but in future product releases we're likely to see that will implement other aspects of the Nehalem architecture. The article itself is 8 pages long so I'll leave it to you to read it in its entirety, but I will share a few excerpts that may help you to gain a better understanding of the products we'll visit today.
The first chapter is all about scalability. Next generation Intel micro architecture (Nehalem) is a dynamically scalable and design-scalable micro architecture. At runtime, it dynamically manages cores, threads, cache, interfaces, and power to deliver outstanding energy efficiency and performance on demand. At design time, it scales, enabling Intel to easily provide versions that are optimized for each server, desktop, and notebook market. Intel will deliver versions differing in the number of cores, caches, interconnect capability, and memory controller capability, as well as in the segmented use of an integrated graphics controller. This allows Intel to deliver a wide range of price, performance, and energy efficiency targets for servers, workstations, desktops, and laptops. To extract greater performance from this new micro architecture, in targeted market segments, Intel is also introducing a new platform architecture: Intel QuickPath Architecture. Through integrated memory controllers and a high-speed interconnect for connecting processors and other components, Intel QuickPath Architecture delivers best-in-class performance, bandwidth, and reliability. In turn, it truly enables systems to fully unleash the new levels of performance that new and more powerful next generation micro architecture-based processor cores will deliver. Next generation Intel micro architecture (Nehalem) marks the next step (a "tock") in Intel's rapid "tick-tock" cadence for delivering a new process technology (tick) or an entirely new micro architecture (tock) every year. The first Nehalem-based processors are expected to release in the latter part of 2008. The family will grow to include server, workstation, desktop, and mobile processors. The next generation micro architecture's performance and power management innovations include:
For more information on Intel's Core i7 series, please visit our Featured Reviews: Processors section which includes comprehensive articles on the Core i7-920 (BX80601920) and Core i7-965 Extreme Edition processors. Intel X58-Express PlatformThe ASUS P6X58D-E motherboard platform consists of the Intel Core i7 processor (CPU), Intel X58-Express Chipset (IOH) and the ICH. The CPU now incorporates the system memory controller and accesses DDR3 memory through three independent memory channels. The IOH provides support for the two PCIe graphics slots and connects to the CPU via the Quick Path Interconnect (QPI) bus. The ICH provides the support for the SATA, USB and other system interfaces and is connected to the IOH via the DMI bus.
All motherboard busses and components are driven from a single 133.33 MHz base clock. The resulting component speed values are generated by applying a multiplier value to this base clock. There are four multipliers on the motherboard which are used to set the system speed:
The Intel X58 Express Chipset
PCI Express 2.0Intel's high-end desktop chipset continues support for PCI Express 2.0 and adds flexibility with support of dual x16 and up to quad x8 graphics card configurations and combinations in between. The greatly improved 32GB/s of graphics bandwidth capability enables much higher levels of performance on graphics intensive applications such as high end gaming and video rendering for digital content creation. Faster System PerformanceWith the growing imbalance between processor and memory performance, it is critical to optimize the memory controller design to obtain the maximum possible performance from the memory subsystem. The transition of the integrated memory controller (iMC) into the processor significantly increases overall system performance through the optimization of available bandwidth along with reduction of memory access latency. The Intel Core i7 family of processors brings triple channel DDR3 memory technology support. The DDR3 SDRAM devices operating at 1066 MHz, offer peak data transfer rates of up to 25.6 GB/s (when operated in triplel-channel interleaved mode), enabling the platform to take advantage of the higher bandwidth, faster system performance, and higher performance per watt at 1066MHz2. Intel I/O Controller Hub 10 (Intel ICH10 and Intel ICH10R)The Intel ICH10 I/O controller hub of the Intel X58 Express Chipset integrates several capabilities to provide flexibility for connecting I/O devices.
ASUS P6X58D-E Features
LGA1366 Intel Bloomfield Processor Ready
3-Way SLI and Quad-GPU CrossFireX Support!
PCI-Express 2.0
True SATA 6Gb/s Support
True USB 3.0 Support
Triple-Channel DDR3 2000 (O.C.) / 1333 / 1066 support
ASUS TurboV
ASUS EPU
ASUS Quiet Thermal Solution
Fan Xpert
Up to 20°C (36°F) Cooler - Stack Cool 3+
ASUS Crystal Sound
Noise Filter
ASUS EZ DIY
Q- Shield
EZ-Flash 2
ASUS Q-Design
Q-Connector
O.C. Profile
GreenASUS ASUS P6X58D-E Specifications
First Look: ASUS P6X58D-EIntel originally launched the X58-Express platform on 3 November 2008, and despite some incremental improvements here and there very little has changed with the otherwise ideal core design. While not as expensive as the ASUS P6X58D-Premium motherboard, the P6X58D-E is still designed for the enthusiast through-and-through. A black printed circuit board (PCB) is paired with other black and blue hardware components to create an attitude that says "I'm built to work hard, and play even harder". Benchmark Reviews has tested more than a few motherboards in our time, and ASUS has repeatedly proven itself as the premier name in new technology and hardware stability. While our benchmark tests will prove this point later in this article, this section will cover basic motherboard features and component details.
Based on Intel's X58-Express chipset, the ASUS P6X58D-E motherboard comes with the requisite two 16x PCI-Express 2.0 lanes, and single 8x PCI-Express 2.0 lane. NVIDIA Triple-SLI or ATI CrossFireX video card sets perform their best with X58-Express platforms, which allow extreme-bandwidth graphics processing hardware to take advantage of the 32 reserved link lanes. A single-lane PCI-Express slot and two standard PCI slots also offer additional expansion capabilities, if you should need them. Compared to the P6X58D-Premium, ASUS offers a single heat-pipe rod on the P6X58D-E motherboard. This heat-pipe rod spans from the covered Intel X58-Express Northbridge chip's heatsink, and continues on to cover the rearward row of power-management components that are cooled by thin aluminum fin-sinks.
At first glance it might not seem like the ASUS P6X58D-E offers anything new that the other ASUS P6-series motherboards or both Rampage-II products don't already include, but the devil is in the details as they say. At the time of its launch, the original P6X58D-Premium was the only motherboard in the ASUS X58 product line to offer SuperSpeed USB-3.0 or Revision 3.x SATA 6.0-Gbps (aka SATA-III) controllers, and now the P6X58D-E adds these features with a more affordable price tag. Surrounding the LGA1366 processor socket are several high-quality CPU power modules that utilize ferrite core chokes to minimize electromagnetic (and radio) interference signal noise and create a cleaner electrical circuit and comprise the finer points ASUS' EPU and 16+2 Phase Power Design. A lower Resistance from Drain to Source rDS (ON) MOSFET array allows for transitional power steps. Japanese manufactured SMD solid state capacitors, which contain a solid organic polymer and lower equivalent series resistance (ESR), are implemented throughout this board and will likely outlast the useful life of the ASUS P6X58D-E motherboard.
Previous generation LGA775 cooling products are not compatible with the LGA1366 socket. The X58-Express LGA1366 socket increased the distance between CPU cooler mounting holes to 80mm, which is significantly more footprint area than the 72mm used by the LGA775 socket. This has opened the door for several new aftermarket cooling solution, since the Intel Core-i7 desktop processor series is by definition an enthusiast product line made to endure overclocking. Many CPU cooler manufacturers have designed adapters to fit existing LGA775 coolers onto the LGA1366 socket, which isn't safe because of the enlarged processor surface area. For systems not receiving an overclock, this may not be such a problem. But if you're going to re-use your Core 2 cooler on any enthusiast-grade Nehalem LGA1366 Core-i7 processor, it had better be listed near the top of our Best CPU Cooler Performance list. I'll explain why in my final thoughts section, which should be helpful information for hardware enthusiasts. Like many other X58 motherboards, there are six DIMM slots available for DDR3 memory. The ASUS P6X58D-E accepts up to 24GB of DDR3 system memory. If overclocked 2000MHz DDR3 can be used; otherwise 1600/1333/1066MHz Non-ECC Un-buffered triple-channel memory architecture is supported. Support for Intel Extreme Memory Profile (XMP) memory kits is standard on the X58-Express platform. X58-Express does not retire dual-channel memory mode, so enthusiasts who are already using their favorite DDR3 memory in an older system can upgrade to X58 without purchasing additional memory; the drawback is that dual-channel mode only doubles memory bandwidth while triple-channel mode will (you guessed it) triple the original bandwidth.
The front-view of the ASUS P6X58D-E PCB illustrates how much design effort went into making all of the new components fit. 24GB of available system memory will really add momentum for 64-bit computing support, but the six DIMM slots might also help optimize current 32-bit systems with smaller 1GB modules. 32-Bit Windows Operating Systems for example, offers a 4GB maximum memory mapping space and anything more is ignored. Since most all PCI-E video cards available today offer at least 512MB of GDDR, it's theoretically impossible for enthusiasts to completely realize 4GB of system memory with a 32-bit version of Windows. The Intel ICH10R Southbridge chip supports six SATA-3.0Gbps ports (colored blue) capable of RAID-0, 1, 5, and 10. Colored gray, a pair of third-generation SATA 6Gb/s ports are made available on the ASUS P6X58D-E by a Marvell 88SE9128-NAA2 controller. While the P6X58D-E uses the Marvell SE9128 chip capable of 128/256-bit AES hardware encryption and RAID-0/1 support, the ASUS P6X58D-Premium uses a Marvell SE9123 chip that does not support these functions. As with all motherboards using the Marvell SE9128 controller, RAID is handled through the Marvell BIOS, and not the motherboard's BIOS. Closer Look: ASUS P6X58D-EIn this section, Benchmark Reviews inspects those small feature details that set the ASUS P6X58D-E apart from the more-expensive P6X58D-Premium and other X58-Express motherboards. While SATA-6G and USB-3 support are the highlight features, improvements to the power management, audio, and network functions also exist. Based on our comparison, here are the major differences between the ASUS P6X58D-E and -Premium models:
ASUS P6X58D-E Motherboard
ASUS P6X58D-Premium Motherboard (With Differences)The rear Input/Output panel (I/O panel) shown below receives the first major update: SuperSpeed USB-3.0 support. Two color-coded PS/2 ports are available for older keyboard or mouse peripherals, purple for keyboard and green for mouse. Although it's difficult to see, a small black button offers the ability to clear CMOS settings and restart with defaults. Colored blue, two SuperSpeed USB-3.0 ports depend on the NEC-D720200F1 controller chip (part number µPD720200). Two more SuperSpeed USB3 ports could have fit directly beside the fist set, but ASUS engineers decided to leave this area empty. Audio support on the ASUS P6X58D-E utilizes the Realtek ALC889 chip, which offers 7.1 High-Definition sound. This audio chipset may be integrated, but with a featured 106 dB Signal to Noise ratio over eight channels it's anything but low-end. The coaxial and optical S/PDIF out ports supply eight channels to PC audiophiles, delivering DTS Surround Sensation UltraPC support and Blu-ray Disc audio layer Content Protection. Realtek's ALC889 chip also supports audio-jack detection, multi-streaming, and front panel jack-retasking. Six analog-out audio jacks are available further down the panel, for backwards compatibility.
The VIA Technologies VT6308 controller powers two IEEE-1394a Firewire ports on the P6X58D-E, one at the back and another at the bottom of the motherboard. Four High-Speed USB-2.0 ports reside next to the Gigabit Ethernet adapter driven by a Marvell 88E8056-NNC1 chip. The PCIe Gigabit LAN controller offers the four-year old (yet seldom mentioned) ASUS AI-NET2 technology, and although not documented on their website or in the manual I've discovered AI-NET2 can diagnose local area network connection issues before entering the Operating System. AI NET2 remotely detects cable connections at system power-on, and faulty connections are reported back up to 100 meters at 1 meter accuracy. The ASUS EPU feature provides total system energy efficiency by detecting current PC loadings and intelligently moderating power in real-time by using a 16+2 phase VRM design. The 16+2 phase power design (16-phase to vCore; 2-phase to vDRAM/QPI controller inside CPU) can reach high power efficiency, dispel heat generated by VRM modules effectively by using high quality power components such as low RDS (on) MOSFETs, Ferrite core chokes with lower hysteresis loss, and 100% Japan-made high quality conductive polymer capacitors. Pictured below is the backside of the motherboard PCB showing off a PEM-ASP0801 chip, and EPU-ASP0800 power phase ICs partially covered with a single anodized aluminum heat-spreader (two come attached to the P6X58D-Premium). The massive number of power VRM phases are intended to allow overclockers a more stable platform for their tweaking projects.
ASUS P6X58D-E Motherboard
ASUS P6X58D-Premium Motherboard (With Differences)One particular feature the ASUS P6X58D-E (and -Premium) motherboard offers to gamers is a marriage of CrossFireX and Triple-SLI support on the same motherboard. ASUS includes a standard and 3-way SLI bridge connector, but CrossFire bridge connectors will need to be supplied by respective manufacturers. ASUS offers three PCI-Express 2.0-compliant ports on the P6X58D-E: the first slot offers 16x link lanes, the second operates at 16x lanes or switches to 8x whenever the third slot is occupied, which also operates at 8x. In a two-card graphics setup using either ATI CrossFire or NVIDIA SLI configuration, the first two PCI-E 2.0 ports operating at 16-lanes per video card offers the most ideal bandwidth. While adding a third video card for triple-SLI or CrossFireX won't come close to bandwidth saturation and should not see any measure of reduced performance for most video games, there could be a penalty for using that third PCIe slot when SATA6G (Marvell 9123) and USB-3.0 (NEC D720200F1) are enabled. Intel's X58-Express offers 32 total PCI-E 2.0 link lanes reserved for graphics, and the Intel X58 IOH provides an additional four lanes that can be used for graphics or I/O for a total of 36 PCI-Express lanes. More likely uses of those four lanes will be the DMI link, Marvell, and NEC chips, which will share those lanes or borrow as-needed for normal operation.
Another note of interest is the orientation of SATA ports, which utilize transverse-mount connections to stem cables off to the side of the motherboard for both SATA6G and four adjacent SATA3G ports. This layout works extremely well for all modern video cards, especially the larger GeForce GTX-480 and Radeon HD 5870 video cards which occupy multiple expansion slots. Please continue on towards the next section, which how Benchmark Reviews will go about testing the top-of-the-line ASUS P6X58D-E motherboard. BIOS and OverclockingLet's face it: X58 is the platform of choice for enthusiast overclockers and extreme gamers. This is why Intel offers the Core i7-965EE and Core i7-975 Extreme Edition processors exclusively for the LGA1366 socket on X58-Express motherboards. It's also a safe bet that ASUS understands what it takes to deliver the premier overclocking platform, which is what they've attempted to create on the P6X58D-Premium motherboard. First and foremost, every chip is different. Despite close production tolerances and identical architecture, not all same-model computer hardware will perform the same. For example, the Intel Core i7-920 processor used for testing on the ASUS P6X58D-Premium motherboard may overclock better on a different P6X58D-Premium. Likewise, a different Core i7-920 CPU might overclock better than the processor we've used. To avoid an unfair evaluation of overclocking performance, we will instead concentrate on the overclocking features available within the BIOS. The ASUS P6X58D-E motherboard makes use of the American Megatrends (AMI) BIOS, similar to most other ASUS motherboards. Our test sample received firmware 0303, released in mid-June 2010. Future firmware releases may offer different options than those we illustrate in this section.
The 'Ai Tweaker' section of the BIOS offers a myriad of settings for the experienced overclocker. The Ai Overclock Tuner is the easiest method to achieve an instant overclock by offering four options: manual user-defined settings, automatic system optimized settings, DOCP (DRAM OC Profile) memory overclock via BCLK, or pre-set eXtreme Memory Profiles. Most experienced overclockers will choose to define their own settings using the Manual option. While CPU overclock settings run moderately deep depending on your end-goal, system memory configurations become highly complex with options that travel well-beyond CAS latency, CAS-RAS delay, RAS pre-time, RAS act-time, and RAS delay. In fact, with over 26 different configuration options, it might be easier to keep within the first set of variable to avoid spoiling the overclock. The real problems begin when you work with component voltages. Not everyone has committed their system hardware power requirements to memory, which seems necessary to choose from either 'Auto' voltage or either +/- 0.00625 volt increments. While I personally feel that having the current voltage displayed beside the new setting would be optimal, the Hardware Monitor → Power section will deliver some basic component voltage readings so long as you don't mind moving between pages.
In summary, the ASUS P6X58D-E and P6X58D-Premium motherboards offers some basic entry-level overclocking options for novice hardware enthusiasts, as well as some very complex BIOS options for fine tuning minutia hardware settings. The current and default power variables would be more helpful if they were displayed near the voltage options, a la Award BIOS designs, but patient overclockers still have them available with some minor navigation. Motherboard Testing MethodologyBenchmark results are only as good as their test methodology, and there are several different methods to compare product to one-another. Yet, even when you try to directly measure motherboard performance the features don't always stack up. Since processor compatibility changes across platforms, and firmware/driver updates change frequently, it's very difficult to compare motherboards in an "apples-to-apples" fashion. Still, we try. Unless otherwise noted, exclusive P55 vs X58 comparisons use system memory configured to operate at 1333MHz with CL 6-6-6-18 timings. These are the specified memory speeds supported by the chipset, according to Intel. Unless noted, no overclock was given to any of the hardware and BIOS settings were matched as closely as possible. At the start of all graphics tests, the previous display adapter driver is uninstalled and trace components are removed using Driver Cleaner Pro. We then restart the computer system to establish display adapter settings and define the monitor. Once the hardware is prepared, we begin our testing. To compare and contrast CPU- and GPU-dependency, Benchmark Reviews conducts testing at both the lowest- and highest-possible resolutions. Low display resolutions create a dependency on CPU performance, while high display resolutions place the load on GPU power. Each benchmark test program begins after a system restart, and the very first result for every test will be ignored since it often only caches the test. Each test is completed five times, with the highest and lowest scored removed. The average results of the three remaining tests are displayed in our article. Since all of the benchmarks we use for testing represent different game engine technology and graphic rendering processes, our battery of tests will provide a diverse range of results for you to gauge performance on your own computer system. Although many gamers and enthusiasts are still using Windows XP, Benchmark Reviews has made the switch to Microsoft Windows 7 as the Operating System of choice for our test platforms. Gigabyte GA-X58A-UD3R Test System
ASUS P6X58D-E Test System
Gigabyte GA-EX58-UD4P Test System
ASUS P6X58D-Premium Test System
Gigabyte GA-X58A-UD7 Test System
Benchmark Software
Support Hardware
EVEREST CPU BenchmarksLavalys EVEREST Ultimate Edition is an industry leading system diagnostics and benchmarking solution for enthusiasts PC users, based on the award-winning EVEREST Technology. During system optimizations and tweaking it provides essential system and overclock information, advanced hardware monitoring and diagnostics capabilities to check the effects of the applied settings. CPU, FPU and memory benchmarks are available to measure the actual system performance and compare it to previous states or other systems. Furthermore, complete software, operating system and security information makes EVEREST Ultimate Edition a comprehensive system diagnostics tool that offers a total of 100 pages of information about your PC. All of the benchmarks used in our test bed: Queen, Photoworxx, ZLib, and AES, all rely on basic x86 instructions, and consume very low system memory while also being aware of HyperThreading, multi-processors, and multi-core processors. While the EVEREST CPU tests really only compare the processor performance more than it measures platforms, it still offers a glimpse into what kind of power each platform possesses.
Queen and Photoworxx tests are synthetic benchmarks that operate the function many times over and over-exaggerate by several magnitudes what the real-world performance would be like. The Queen benchmark focuses on the branch prediction capabilities and misprediction penalties of the CPU. It does this by finding possible solutions to the classic queen problem on a chessboard. At the same clock speed theoretically the processor with the shorter pipeline and smaller misprediction penalties will attain higher benchmark scores. Like the Queen benchmark, the Photoworxx tests for penalties against pipeline architecture. The synthetic Photoworxx benchmark stresses the integer arithmetic and multiplication execution units of the CPU and also the memory subsystem. Due to the fact that this test performs high memory read/write traffic, it cannot effectively scale in situations where more than two processing threads are used. The EVEREST Photoworxx benchmark performs the following tasks on a very large RGB image:
The Zip Library test measures combined CPU and memory subsystem performance through the public ZLib compression library. ZLib is designed as a free lossless data compression library for use on virtually any computer hardware and operating system. The ZLib data format is itself portable across platforms and has a footprint independent of input data that can be reduced at some cost in compression. The AES integer benchmark measures CPU performance using AES data encryption. It utilizes Vincent Rijmen, Antoon Bosselaers and Paulo Barreto's public domain C code in ECB mode and consumes 48 MB of memory.
The memory tests are included for illustration, since the system memory bandwidth offers a very minor impact on gaming performance and real-world experience. Nevertheless, it's evident from the results that not all motherboards respond to identical memory kits and settings in the same way. TEST SUMMARY: Since the exact same Intel Core i7-920 processor and memory was used for all tests it's not surprising to see similar results reported in each benchmark; which is why motherboard comparisons focus more on additional feature sets. Although the benchmark results were all extremely close, both the ASUS P6X58D-E and ASUS P6X58D-Premium edged out the other X58 motherboards in CPU Queen, PhotoWorxx, ZIP, and AES tests. The Gigabyte GA-X58A-UD7 motherboard delivered the best memory read, write, and copy performance, followed by the ASUS P6X58D-E and -Premium. The ASUS P6X58D motherboard series offered a decent 5% boost to CPU performance in Everest CPU benchmark tests while delivering average memory bandwidth, but this isn't the kind difference you'll notice anywhere but in the benchmark charts. Cinebench R11.5 BenchmarksMaxon Cinebench is a real-world test suite that assesses the computer's performance capabilities. Cinebench is based on Maxon's award-winning animation software, Cinema 4D, which is used extensively by studios and production houses worldwide for 3D content creation. Maxon software has been used in blockbuster movies such as Spider-Man, Star Wars, The Chronicles of Narnia and many more. Cinebench Release 11.5 includes the ability to more accurately test the industry's latest hardware, including systems with up to 64 processor threads and the testing environment better reflects the expectations of today's production demands. A more streamlined interface makes testing systems and reading results incredibly straightforward. The Cinebench R11.5 test scenario uses all of a system's processing power to render a photorealistic 3D scene, "No Keyframes" the viral animation by AixSponza. This scene makes use of various algorithms to stress all available processor cores. The OpenGL graphics card testing procedure uses a complex 3D scene depicting a car chase with which the performance of your graphics card in OpenGL mode is measured. During the benchmark tests the graphics card is evaluated by way of displaying an intricate scene that includes complex geometry, high-resolution textures, and a variety of effects to evaluate the performance across a variety of real-world scenarios. The OpenGL tests in Cinebench force processor-first graphics computation before offloading work to the available video card. Cinebench R11.5 reveals performance results illustrated in the chart below:
Cinebench R11.5 Processor Benchmark ResultsTEST SUMMARY: Single-core CPU performance offers a per-core baseline reference in Cinebench R11.5, and the speed differences between motherboards in our test group illustrate very little separation. Whatever differences that existed are amplified as the CPU multi-core tests are conducted, producing 3.87~3.92 points for the 2.66GHz Intel Core i7-920 processor. In the Cinebench OpenGL tests, a Radeon 5870 is paired to the 2.66GHz Intel Core i7-920 to produce 56.2~56.4 FPS. Considering a reasonable margin of error, each of the motherboards demonstrate nearly identical processor performance and OpenGL frame rate levels. PCMark Vantage Test ResultsPCMark Vantage is an objective hardware performance benchmark tool for PCs running 32- and 64-bit versions of Microsoft Windows Vista or Windows 7. PCMark Vantage is well suited for benchmarking any type of Microsoft Windows Vista/7 PC: from multimedia home entertainment systems and laptops, to dedicated workstations and high-end gaming rigs. Benchmark Reviews has decided to use a few select tests from the suite to demonstrate simulate real-world processor usage in this article. Our tests were conducted on 64-bit Windows 7, with results displayed in the chart below. TV and Movies Suite
Gaming Suite*
Music Suite
* EDITOR'S NOTE: Hopefully our readers will carefully consider how relative PCMark Vantage is as "real-world" benchmark, since many of the tests rely on unrelated hardware components. For example, per the FutureMark PCMark Vantage White Paper document, Gaming test #2 weighs the storage device for 100% of the test score. In fact, according to PCMark Vantage the video card only impacts 23% of the total gaming score, but the CPU represents 37% of the final score. As our tests in this article (and many others) has already proven, gaming performance has a lot more to do with the GPU than the CPU, and especially more than the hard drive or SSD (which is worth 38% of the final gaming performance score). TEST SUMMARY: Finishing out our synthetic benchmark tests, we've demonstrated that an Intel X58-Express motherboard using the same support hardware will produce nearly identical results. This conclusion enforces the need for motherboard manufacturers to produce products that offer additional features beyond the chipset. Of course, these additional features have an impact on the final outcome. Throughout our benchmark tests, we noticed that motherboards with less add-on features such as dual network adapters and additional controllers produced infinitesimal performance differences. Battlefield Bad Company 2The Battlefield franchise has been known to demand a lot from PC graphics hardware. DICE (Digital Illusions CE) has incorporated their Frostbite-1.5 game engine with Destruction-2.0 feature set with Battlefield: Bad Company 2. Battlefield: Bad Company 2 features destructible environments using Frostbit Destruction-2.0, and adds gravitational bullet drop effects for projectiles shot from weapons at a long distance. The Frostbite-1.5 game engine used on Battlefield: Bad Company 2 consists of DirectX-10 primary graphics, with improved performance and softened dynamic shadows added for DirectX-11 users. At the time Battlefield: Bad Company 2 was published, DICE was also working on the Frostbite-2.0 game engine. This upcoming engine will include native support for DirectX-10.1 and DirectX-11, as well as parallelized processing support for 2-8 parallel threads. This will improve performance for users with an Intel Core-i7 processor. Unfortunately, the Extreme Edition Intel Core i7-980X six-core CPU with twelve threads will not see full utilization. In our benchmark tests of Battlefield: Bad Company 2, the first three minutes of action in the single-player raft night scene are captured with FRAPS. Relative to the online multiplayer action, these frame rate results are nearly identical to daytime maps with the same video settings.
TEST SUMMARY: Producing a range of similar results that are all within margin of error, the resounding message here is that graphics performance does not change among Intel X58-Express motherboards. Also keeping with our theory that less-robust motherboards have fewer pipeline penalties, the two most feature-laden motherboards (ASUS P6X58D-Premium and Gigabyte GA-X58A-UD7) produced lower results on a microscopic level. The bottom line is that the ASUS P6X58D-E is no less suited for producing top-level gaming performance as motherboards using the same X58 platform that cost twice as much. Aliens vs Predator BenchmarkAliens vs. Predator is a science fiction first-person shooter video game, developed by Rebellion, and published by Sega for Microsoft Windows, Sony PlayStation 3, and Microsoft Xbox 360. Aliens vs. Predator utilizes Rebellion's proprietary Asura game engine, which had previously found its way into Call of Duty: World at War and Rogue Warrior. The self-contained benchmark tool is used for our DirectX-11 tests, which push the Asura game engine to its limit. In our benchmark tests, Aliens vs. Predator was configured to use the highest quality settings with 4x AA and 16x AF. DirectX-11 features such as SSAO and tessellation have also been included, along with advanced shadows.
TEST SUMMARY: As expected, each motherboard performed virtually the same when equipped with identical hardware components. Aliens vs Predator is an excellent tool for testing graphics cards against one-another, but our selection of motherboards have proved that the marketed 'extras' don't add up to increased game performance over similar competition. What's going to count most is which motherboard manufacturer offers the best cooling features, add-on accessories, or most ideal component layout. Power Consumption ResultsLife is not as affordable as it used to be, and items such as fuel and electrical energy top the list of resources that have exploded in price over the past few years. Add to this the limit of non-renewable resources compared to demand and you can see that the prices are only going to get worse. Planet Earth is needs our help, and needs it badly. With forests becoming barren of vegetation and snow capped poles quickly turning brown, the technology industry has a new attitude towards suddenly becoming "green". Motherboard manufacturers, in particular, have been touting their new energy saving features. How effective these power management system are, is exactly what we intend to measure in our power consumption tests. Up to this point, Benchmark Reviews has compared each X58-Express motherboard against one-another in benchmark performance tests. For this section, only one topic is of primary concern: electrical power consumption. So then, since the Gigabyte GA-EX58-UD4P has relegated as the reference for our benchmarks, it should be interested to see how old power-management technology compares to the new features.
To measure system power consumption, Benchmark Reviews uses the Kill-A-Watt EZ (model P4460) power meter made by P3 International. A baseline test is taken as the system is allowed to boot into Windows and rest idle at the login screen for three minutes before power consumption is recorded. Once the baseline reading has been taken, Lavalys EVEREST Ultimate Edition is loaded and the System Stability Test is run with 100% stress on the CPU and FPU for five minutes and the results recorded. Next, the CPU, FPU, Cache, and System Memory stress options are turned on for five minutes. After the CPU/Cache/RAM test results are recorded, our final loaded power consumption reading is taken with the video card running at 100% using the FurMark stress test. TEST SUMMARY: Power consumption is at it's least-controlled state before the Operating System and drivers can manage the hardware and deliver managed power efficiency. For this reason, power usage within the BIOS setup page is much higher than at idle. The Gigabyte GA-EX58-UD4P, which lacks additional Ethernet, USB-3.0, or SATA 6Gb/s controllers, offered the best result at 182 watts of consumption. Our featured test product, the ASUS P6X58D-E required 184 watts, which was the best of all Marvell SATA-6G motherboards. The Gigabyte GA-X58A-UD3R and ASUS P6X58D-Premium motherboards each used 186W, while the Gigabyte GA-X58A-UD7 consumed 188W. At idle, the ASUS P6X58D-E again offered the lowest power consumption of all the SuperSpeed USB-3.0 and Marvell SATA-6G equipped motherboards. When the power is turned up for 100% processor utilization, all five motherboards increased power consumption by about 84 watts. When the processor, system memory, and cache subsystem were all taxed, the ASUS P6X58D-E and Gigabyte GA-EX58-UD4P each consumed 92W over idle, while the ASUS P6X58D-Premium required 94W more power. The Gigabyte GA-X58A-UD3R and GA-X58A-UD3R each used 96W more power than at idle. Keeping in mind that all of these X58-Express motherboards share nearly identical power management features and delivered similar power consumption. The level of power savings can be further improved using Intel SpeedStep and Core-i7 C-state features in conjunction with motherboard tools. Tylersburg Refresh Final ThoughtsBack when Benchmark Reviews launched the Intel Core i7 CPU & X58-Express platform in November 2008, having a team of two or more graphics cards seemed plausible for a few elite gamers. Extremely low retail prices on DDR3 system memory helped ease the new standard into mainstream acceptance when it would return in the P55-Express platform. However, it's because of Intel's X-before-P launch schedule that new technologies such as SuperSpeed USB-3.0 and third-generation SATA 6Gb/s were delivered on the mainstream P55 and overlooked the aging X58-Express "Tylersburg" enthusiast chipset. Without fail, the manufacturers have created their very own Tylersburg-refresh options ahead of the Intel X68-Express platform. If X58 is good for anything, it's the 32-link lanes it provides PCI-Express 2.0 graphics. For single-unit video cards this is a non-issue, since sixteen lanes are more than enough and both the P55 or X58-Express platforms offer this. It's the multi-card setups that will see the most benefit from X58, primarily Triple-SLI and CrossFireX 'Tri-Fire' sets with three video cards. Additionally, the new NEC SuperSpeed USB3 and Marvell SATA6G controllers won't cause any performance penalty for borrowing much-needed PCI-Express link lanes on the X58 platform like they would on P55. But even still, X58-Express cannot offer what P55 has introduced: optimal memory management. Benchmark Reviews has further documented the differences in our P55 vs X58 article. With DRAM being sold at the lowest prices we've seen in many years, the introduction of a motherboard willing to harness large amounts of DDR3 may be a blessing in disguise. Even though enthusiasts have yet to fall in love with 64-bit versions of the Windows Operating System, there has been renewed interest since the launch of Windows 7. Supporting up to 24GB or system memory on a desktop motherboard is unheard of, and it's all thanks to triple-channel support on X58. The downside, however, is that transaction times are far worse than if the memory controller was integrated into the processor such as on Intel's 'Lynnfield' Core-i5/i7 LGA1156 processors. As the Intel P55 chipset has now demonstrated, the future is in PCH-based designs, and 32- (or 22nm) technology has paved the way for Moore's law to continue as predicted. A true Tylersburg refresh (X68) may deliver all of the hardware features we desire for modern computing, but this isn't Field of Dreams, and if you build it they won't come. Computer hardware needs more than speed and power; it needs purpose. New and upcoming DirectX-11 software notwithstanding, video games have generally required the same graphical power as they needed over the past few years. Newer server and virtualization technology continues to refine efficiency and uses fewer CPU cycles. So essentially software is barely moving forward while hardware is making leaps and bounds. Which raises the question: to what end? Software just hasn't been keeping up its end of the deal, and most people still use 32-bit technology (introduced back in Windows 95). it's sad but true. Games like Crysis helped give reason for advancing graphics technology, just like virtualization technology and Terminal Services helped push processor power. But the apex of software demands hasn't really changed in several years, and having massive amounts of system memory are only helpful if there's an application that requires it. I used to overclock my Pentium 4 (and later Pentium D and Core 2) processor to get a few extra frames out of Battlefield 2 and earn more work units per day with Folding@Home. But now I have a graphics card that performs 600x better at folding proteins than my CPU ever did, and I have a Core-i7 processor that can encode my self-authored DVD's in a fraction of the time it used to take. We haven't hit the wall, but the light at the end of the tunnel is getting very close. If software doesn't come around soon, perhaps in the shape of widespread adoption towards 64-bit computing using Microsoft Windows 7, we'll soon share the same dilemma facing the automobile industry: high-horsepower engines with break-neck torque driving down roads with a 65-MPH speed limit. I personally feel that this has been the case ever since Intel launched the Core 2 processor, which is why we're now sharing the other auto-industry dilemma: power efficiency. ASUS P6X58D-E ConclusionAlthough our rating and final score are made to be as objective as possible, please be advised that every author perceives these factors differently at different points in time. While we do our best to ensure that all aspects of the product are considered, there are often times unforeseen market conditions and manufacturer changes which occur after publication that would render our rating obsolete. Please do not base your purchases solely on our conclusion, as it represents our product rating at the time of publication. Benchmark Reviews begins our conclusion with a short summary for each of the areas that we rate. The first is performance, which considers how effective the ASUS P6X58D-E X58-Express SATA-6G motherboard performs in operation against direct competitor products. Graded on a scale of 1.0 to 10, the ASUS P6X58D-E receives a score of 9.50 when compared against the other products in its related category. CPU benchmark performance measured up to 5% higher than other X58 motherboards, even with the exact same settings applied. DDR3 system memory bandwidth was average for the P6X58D-Premium, but overall system performance was insignificantly better than others. The Marvell SE9128 SATA 6Gb/s controller matches the other SATA6G options, with RAID-0/1 capability available to those who need it. SuperSpeed USB-3.0 functionality is possible because of the NEC D720200F1 chip, although the market has been slow to respond with storage devices optimized for the new specification. Performance is further enhanced by utilizing SLI/Triple-SLI and CrossFireX/Tri-Fire video card sets for high-performance graphics. Intel supports their Extreme Edition (EE) Core-i7 processors on the LGA1366 socket, such as the Intel Core i7-980X 6-Core 'Gulftown' CPU. Additionally, the upcoming six-core Westmere 970 and 990X processors will also be supported on the ASUS P6X58D-E motherboard. Opposite of other manufacturers, ASUS refrains from turning their motherboards into a full-color canvas. A black printed circuit board helps blue anodized aluminum components to stand out, and nickel-plated heat-pipe gives the hardware an exciting look. The colors used for expansion card slots are matched to bus speed and type, and the power phase and onboard LEDs give just as much for user feedback as they do for captivating looks. At the end of my testing I was pleased to say I don't miss copper heatpipe tubing winding around the motherboard, because the ASUS P6X58D-E gets the job done with a single rod.
Much like their original X58-Express motherboard series, ASUS has achieved near-perfect component layout on their P6X58D platform. The construction is what you would expect from world's leading manufacturers of mainboard products: outstanding. The Marvell-SE9128 and Intel ICH10R Southbridge SATA ports are turned sideways, except for two located along the bottom of the mainboard, allowing full access to them even with large video cards installed. Six DDR3 memory module banks are located far enough away from the socket for better access to them and unrestricted cooling for the processor. In terms of functionality the ASUS P6X58D-E offers everything that previous X58-Express motherboards delivered, plus it adds third-generation SATA 6Gb/s and SuperSpeed USB-3.0 support. The differences between the P6X58D-E and P6X58D-Premium models were clarified in our Closer Look section, but primarily a Marvell 88SE9128 SATA 6Gb/s controller offers the RAID functionality that the -Premium doesn't. Eight-channel high-definition audio and Gigabit Ethernet compliment the platform, along with 24GB total DDR3 memory capacity. Intel's X58-Express chipset receives 32 total PCI-Express link lanes, but when you consider that the SATA6G and SuperSpeed USB 3.0 take up to six PCI-E lanes there's only one place to borrow them from: graphics. With the Marvell and NEC controllers enabled in a single card configuration there are still sixteen link-lanes remaining for PCI-Express graphics bandwidth, which is more than enough, but a dual-card set would be reduced to 16+8 since these controllers require the remainder. For most gamers, this isn't going to make a difference because they're using only one or two video cards anyway, but triple-card sets may experience a small performance penalty. As of mid-June 2010, online retailers such as NewEgg offer the ASUS P6X58D-E for $239.99. This is $50 less than the ASUS P6X58D-Premium motherboard that lists at $290. Both of these motherboard solutions offer prices well below the $400 ASUS P6T7 WS Supercomputer and $360 ASUS Rampage-II Extreme X58-Express motherboards (neither of which offer SuperSpeed USB-3 or SATA 6Gb/s), and are a better value than the $340 Gigabyte GA-X58A-UD7 motherboard. Of course, the ASUS P6X58D-E must still contend with the $210 Gigabyte GA-X58A-UD3R, which it competes with directly. In conclusion, the ASUS P6X58D-E demonstrated that it delivers system performance as good or better than competing X58-Express solutions, including the more expensive P6X58D-Premium model. The updated SuperSpeed USB-3.0 and SATA-III 6.0Gb/s RAID functionality is also a major future-proofing perk. The 16+2 Xtreme Phase Power Design offers energy efficiency similar to other motherboards of this platform when high-end power VRM features are incorporated. Casual gamers and mainstream computer users need not concern themselves with the enthusiast-grade P6X58D platform, especially since ASUS offers the Maximus-III Formula and P7P55-WS SuperComputer which both offer outstanding performance and value for the Intel P55-Express platform. However, if you're one of the elite few who use an Intel Extreme Edition processor or multiple video cards, then the ASUS P6X58D-E would go nicely with a Crucial RealSSD-C300 SATA-III 6Gbps SSD. If 64-bit Windows-7 is your Operating System of choice, there are several 12GB DDR3-1600 memory kits that will deliver exceptional performance for the density. Beginning overclockers may be a little overwhelmed, but enthusiast overclockers will feel right at home with the detailed BIOS options offered on the P6X58D-E. My feeling is that real-time power status would still be best served beside the power options, but otherwise the 0303 firmware tested in this article was bullet-proof. The ASUS Express Gate feature is helpful if the O/S is unavailable or you're without a boot drive, but otherwise the added boot-up time will force many users to disable this feature until it's needed. Eight total SATA ports will ensure that no drive is left behind (a popular initiative for my SSD collection), but the SATA-III 6Gbps interface will only benefit compatible modern drives that can reach or exceed the SATA-3GB/s threshold. SuperSpeed 3.0 is really the only functional leap over the others, as SuperSpeed USB 3.0 External Storage Products are already selling. The full depth of ASUS's proprietary product features is well worth the asking price, although TPM encryption security would have been a nice touch at this enthusiast level. Considering real-world performance gains against existing USB-2.0/SATA-3G X58-Express solutions, enthusiasts can count on improving system performance with USB-3/SATA-6G on the ASUS P6X58D-E. Pros:
+ Full-featured motherboard for value-enthusiasts Cons:
- High priced 'enthusiast' motherboard solution Ratings:
Final Score: 9.0 out of 10.Excellence Achievement: Benchmark Reviews Golden Tachometer Award.Questions? Comments? Benchmark Reviews really wants your feedback. We invite you to leave your remarks in our Discussion Forum.
Related Articles:
|
Comments
the pcie bandwith used to support usb3 and sata 3 comes from the ICH10R southbridge, which support up to6 pcie links.
In this case x4 is used for bandwith for usb3 and sata3, and the remaining x2 are used as 2 x1 pcie connectors on the motherboard.
Meanwhile the northbridge supports 32 pcie links used for graphics.
In essence sata3 and usb 3 DOES NOT STEAL BANDWITH FROM GRAPHICS.
If the author of this article does not fix this serious lapse of knowledge in this review and the P6x58D review I WILL LOSE FAITH IN BENCHMARKREVIEWS.COM AND CEASE TO FREQUENT THIS SITE.
I agree, do not spread deceit and do not generalize. I agree with everyone that posted in response to your post. Got the facts, lay them out for us to see. As far as my 2 cents about the SATA bandwidth, I can provide links if need be or direct. Show us your hand........
I've got a solid midi tower with HDDs in internal enclosures. When running the P6X58D-E with a i7 930 I hear a high pitch whistleing noise. Similar to distortion in speakers - but none are connected. It's definitely the motherboard, I tried 3(!) P6X58D-E which had all the same noise. It's not very loud but quite annoying if you're sitting in a quiet office.
I eventually could fix it by disabeling the C1E support which means the motherboard is always in full throttle mode but that's not acceptable for me at that price! So if you want a quiet board, look somewhere else.
Cheers.
When I load up CoreTemp and CPUZ, CoreTemp will tell me what multiplier it's currently running at while it's making the noise, but CPUZ stays locked at one multiplier. I'm not sure why it doesn't fluctuate. It does for the older laptop.
As Steve said, I disabled the C1E and Speedstep and that did stop the noise, but yeah, this will drive me crazy. Needless to say if a client heard this noise. Ugh.
Thanks for posting this info gang. You helped the future!
I think some people are talking about a physical noise rather than one that comes from their speaker.
cheers,
Mark.
I tried 2 different PSUs (the Antec Earthwatts 500W I got with my Sonata III case and a Corsair TX650 I replaced it with) but it was still squealing away horrendously, even during idle.
(Tip: I made sure it was PSU by rolling up a sheet of paper into a tube, putting it in my ear and then then listening close up to the mobo, PSU and other parts. Great trick for isolating the source of such noises!)
Then I read about how somebody disabling C1E stopped squealing, and it worked for me. I like my PC to run 100% power ;)
All C states, turbo, and other bios tweaks have been done, core parking has been done, noise still present.
Thanks to anyone who offers any words of advice.
I use the EPU-6 Engine program and have to set it to 'Max Power Saving Mode' or 'Medium Power Saving Mode', otherwise I get this horrible high pitch whistleing noise and can't work peacefully any more in the same room as my pc. Jesus, what a depressing thing to discover after spending quite a lot of money on this computer.
Bios > Advanced > CPU Configuration > C1E Support
reading a few more posts, it seems the noise being talked about here is a physical noise from some component on the mobo. The noise I have been very concerned about is only audible if I plug in my speakers, and the horrid high pitched sound is there regardless of whether I use my (crappy) onboard audio or my brand new USB IO device... so there is something screwed that is giving this noise to sound output on the motherboard.
GRRRR!!!!! I just bought the USB IO to overcome this noise issue!
I found it is a little loud but it a good trade off for how multi use the system is..
I am a web designer and use lots active programs at the same time, that tends to grind my older computers but i find it very smooth. and the gaming ability is top as well
I found the cooling system to be my only issue ( I live in tropical area, very hot / humid )