Test Settings
We overclocked our C0-stepping Core i7 920 to 3.80 GHz in order to assure a high thermal load with both high-performance cooling solutions, using a 200 MHz base clock and 19x core multiplier.
Test System Configuration | |
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CPU | Intel Core i7 920 (2.66 GHz, 8.0 MB Cache) Overclocked to 3.80 GHz (19x 200 MHz), 1.366V |
CPU Cooler, Air | Cogage True Spirit at continuous 12V 120 mm fan, 1,600 RPM |
CPU Cooler, Liquid | CoolIT Domino A.L.C. at continuous 12V 120 mm fan, 600-2,800 RPM |
Motherboard | Asus P6T Rev. 1.01G, BIOS 0306 (02-03-2009) LGA-1366, X58/ICH10R |
RAM | Kingston KHX16000D3ULT1K3/6GX (6.0 GB) DDR3-2000 at DDR3-1600 CAS 8-8-8-24 |
Graphics | Zotac GeForce GTX260² 896MB 576/999MHz GPU/Shader, GDDR3-2484 |
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 RS850-EMBA 850W, ATX12V v2.2, EPS12V |
Optical | Lite-On LH-20A1L, 20X DVD±R |
Software | |
OS | Microsoft Windows Vista Ultimate x64 SP1 |
Graphics | Nvidia GeForce 182.08 |
Chipset | Intel INF 9.1.0.1007 |
A 1.366 volt output under full load (1.344 volt idle) resulted from setting our Asus P6T motherboard to 1.350V core with Load-Line Calibration enabled.
The increased voltage kept our CPU stable at 3.80 GHz throughout its 8-thread Prime 95 64-bit torture test, while pushing temperatures on these high-capacity coolers beyond 75 degrees Celsius.
Benchmark Configuration | |
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Prime95 v.25.8 | 64-bit executable, Small FFT's, 8-threads |
RealTemp 2.70 | Highest core reading at full CPU load (60 minutes) Highest core reading at 30 minutes idle |
Acu-Rite Thermal Probe | IOH/VRM Heat Pipe temperature at northbridge junction Ambient temperature at 6" from motherboard front edge |