Page 1:AMD's Radeon HD 7970: Presenting A Unique Cooling Challenge
Page 2:Arctic Cooling Accelero Xtreme 7970 And III
Page 3:Deepcool Dracula 7970
Page 4:Test System Setup And Benchmarks
Page 5:Benchmark Results: Temperature And Noise
Page 6:Benchmark Results: Overclocking
Page 7:High Performance Cooling Options For The Radeon HD 7970
Test System Setup And Benchmarks
Our testing includes idle and load temperature measurements, in addition to acoustic benchmarks. We're using Battlefield 3 as our graphics load, with the game running under the Ultra quality preset at 1920x1080 for 10 minutes in the Operation Swordbreaker level. We log temperatures using GPU-Z, and measure noise two feet from the back of the case with a CM-130 SPL meter. Unfortunately, ambient noise is a challenge in our real-world test lab; we recorded 40.5 dB(A).
While the Arctic Accelero Xtreme fans are powered by headers on the graphics card and should vary rotational speed in response to thermal load, Deepcool's Dracula employs power supply or motherboard fan headers. We're using 12 V leads on the motherboard to drive constant RPMs.
We also plan to measure how these coolers handle a GPU overclock to 1100 MHz with a 1.2 V setting. This increase should generate significantly more heat than the stock settings.
|CPU||Intel Core i7-3960X (Sandy Bridge-E), 3.3 GHz @ 4.25 GHz , Six Cores, LGA 2011, 15 MB Shared L3 Cache, Hyper-Threading enabled. |
|Motherboard||ASRock X79 Extreme9 (LGA 2011) Chipset: Intel X79 Express|
|Networking||On-Board Gigabit LAN controller|
|Memory||Corsair Vengeance LP PC3-16000, 4 x 4 GB, 1600 MT/s, CL 8-8-8-24-2T|
|Graphics||Radeon HD 7970 3 GB GDDR5|
|Hard Drive||Samsung 470-series 256 GB (SSD)|
|Power||ePower EP-1200E10-T2 1200 W|
|Software and Drivers|
|Operating System||Microsoft Windows 7 x64, Service Pack 1|
|Graphics Drivers||Catalyst 12.7 Beta|
|Battlefield 3||Operation Swordbreaker, Ultra settings, 1920x1080, 10 minutes|