We wanted to reduce the effect of CPU “bottlenecking” by overclocking, but also wanted to use a setting nearly anyone could match. Our 3.20 GHz speed is identical to that of the Core i7 Extreme 965.
|Test System Configuration|
|CPU||Intel Core i7 920 (2.66 GHz, 8.0 MB Cache)|
|Overclocked to 3.20 GHz (BCLK 200)|
|CPU Cooler||Swiftech Liquid Cooling: Apogee GTZ water block,|
|MCP-655b pump, and 3x120 mm radiator|
|Intel X58/ICH10R Chipset, LGA-1366|
|RAM||6.0 GB DDR3-1600 Triple-Channel Kit|
|CAS 8-8-8-24 at 1.65 V|
|GTX 285 Air-Cooled||XFX GeForce GTX 285 1,024 MB|
|648/1,476/2,484 MHz GPU/Shader/DRAM (data rate)|
|Air-Cooled Overclock||754/1,613/2,550 MHz GPU/Shader/DRAM (data rate)|
|GTX 285 Liquid-Cooled||Zotac GeForce GTX 285 Infinity Edition 1,024 MB|
|722/1,584/2,700 GPU/Shader/DRAM (data rate)|
|Liquid-Cooled Overclock||722/1,584/2,711 GPU/Shader/DRAM (data rate)|
|Hard Drives||WD VelociRaptor WD30000HLFS|
|0.3 TB, 10,000 RPM, 16 MB Cache|
|Sound||Integrated HD Audio|
|Network||Integrated Gigabit Networking|
|Power||Cooler Master RS-850-EMBA|
|ATX12V v2.2. EPS12V, 850W, 64A combined +12V|
|Optical||LG GGC-H20LK 6X Blu-ray/HD DVD-ROM, 16X DVD±R|
|OS||Microsoft Windows Vista Ultimate x64 SP1|
|Graphics||NVidia Forceware 182.08|
|Chipset||Intel INF 18.104.22.1687|
We chose three configurations to represent Zotac’s GeForce GTX 285 Infinity Edition and its air-cooled counterparts. Incredibly, our air-cooled GPU overclocked even better than Zotac’s liquid-cooled solution did, although the air-cooled card’s maximum memory speed was far lower.
As the performance leader of our recent $200-300 X58 Motherboard Comparison, the Asus’ P6T is now our new standard platform.
Western Digital’s 300 GB VelociRaptor first impressed us last year with excellent performance and the company has since improved this product with a new sink that supports standard 3.5” SATA drive racks.
Our ancient Gigabyte 3D Galaxy II liquid cooling system was hauled out of retirement and used exclusively for cooling the GTX 285 Infinity’s water block. Its 120 mm single-fan radiator should be typical of the per-card cooling most builders would choose, as two- to three-card systems often use two to three fan radiators.
|Call of Duty: World at War||Patch 1.1, FRAPS / saved game Highest Quality Settings, No AA / No AF, vsync off Highest Quality Settings, 4x AA / Max AF, vsync off|
|Crysis||Patch 1.2.1, DirectX 10, 64-bit executable, benchmark tool Very High Quality Settings, No AA / No AF (Forced) Very High Quality Settings, 4x AA / 8x AF (Forced)|
|Far Cry 2||DirectX 10, Steam Version, in-game benchmark Very High Quality Settings, No AA, No AF (Forced) Very High Quality Settings, 4x AA, 8x AF (Forced)|
|Left 4 Dead||Very High Details, No AA / No AF, vsync off Very High Details, 4xAA / 8x AF, vsync off|
|World in Conflict||Patch 1009, DirectX 10, timedemo Very High Quality Settings, No AA / No AF, vsync off Very High Quality Settings, 4x AA / 16x AF, vsync off|
|3D Mark Vantage||Version 1.02: 3DMARK, GPU, CPU scores Performance, High, Extreme Presets|