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Five Radeon HD 7970 3 GB Cards, Overclocked And Benchmarked

Test System Setup And Benchmarks

In order to compare the performance of these high-end graphics cards, we're employing an X79 Express-based platform and overclocking Core i7-3960X processor.

Of course, isolating relative performance is important, so game and synthetic benchmark results are key. But the power, temperature, and noise tests are just as critical.

Test System
CPUIntel Core i7-3960X (Sandy Bridge-E), 3.3 GHz, Six Cores, LGA 2011, 15 MB Shared L3 Cache, Hyper-Threading enabled. Overclocked to 4.25 GHz
MotherboardASRock X79 Extreme9 (LGA 2011) Chipset: Intel X79 Express
NetworkingOn-Board Gigabit LAN controller
MemoryCorsair Vengeance LP PC3-16000, 4 x 4 GB, 1600 MT/s, CL 8-8-8-24-2T
GraphicsGigabyte GV-R797OC-3GD1000 MHz GPU, 3 GB GDDR5 at 1375 MHzHIS 7970 IceQ X2 Turbo X1120 MHz GPU, 3 GB GDDR5 at 1400 MHzHIS 7970 IceQ X2 Turbo*1050 MHz GPU, 3 GB GDDR5 at 1400 MHz*simulated by underclocking the Turbo XMSI R7970 Lightning1070 MHz GPU, 3 GB GDDR5 at 1400 MHzSapphire HD 7970 OC950 MHz GPU (1000 MHz Alt. BIOS), 3 GB GDDR5 at 1425 MHz (1450 MHz Alt. BIOS)VisionTek Radeon HD 7970925 MHz GPU, 3 GB GDDR5 at 1375 MHz
Hard DriveSamsung 256 GB (SSD)
PowerePower EP-1200E10-T2 1200 W ATX12V, EPS12V
Software and Drivers
Operating SystemMicrosoft Windows 7 x64, Service Pack 1
DirectXDirectX 11
Graphics DriversCatalyst 12.3 WHQL
3DMark 11Version:, Benchmark Only
Crysis 2Adrenaline Crysis 2 Benchmark Tool, Times Square, DirectX 11
Aliens vs. PredatorVersion, DirectX 11 Benchmark
Metro 2033Full Game, Built-In Benchmark, "Frontline" Scene DX9, High, AAA, 4x AF, No PhysX