Page 1:Radeon HD 7970: A Holiday Surprise That You Can't Buy
Page 2:Graphics Core Next: The Southern Islands Architecture
Page 3:Bringing It All Together: The Tahiti GPU And Radeon HD 7970
Page 4:PRTs, DirectX 11.1, Eyefinity, Stereoscopic 3D, And More
Page 5:Test System And Benchmarks
Page 6:Synthetic And Tessellation Benchmarks
Page 7:Benchmark Results: Battlefield 3
Page 8:Benchmark Results: Crysis 2
Page 9:Benchmark Results: The Elder Scrolls V: Skyrim
Page 10:Benchmark Results: DiRT 3
Page 11:Benchmark Results: World Of Warcraft
Page 12:Benchmark Results: Batman: Arkham City
Page 13:Benchmark Results: Metro 2033
Page 14:GPGPU Benchmarks: This Time, With A Preface
Page 15:2D Performance Benchmarks
Page 16:Benchmark Results: Overclocking
Page 17:Power, Temperature, And Noise Benchmarks
Page 18:Radeon HD 7970: Fast, Forward-Looking, But Not Fully Baked
Power, Temperature, And Noise Benchmarks
Let’s say that the Radeon HD 7970 has the potential to be an amazing performer. Would it still be worth $550 if its maximum power load were enough to cause blackouts at Candlestick Park during a 49ers game? Fortunately, we don’t have to speculate.
Surprisingly, the 7970 draws less load power than a GeForce GTX 580, while pulling less at idle than a Radeon HD 6970. AMD’s power management advancements should pay dividends amongst our European audience, which has to pay significantly more for electricity than the North American readers.
Now it’s time to turn our attention to GPU temperatures. We should mention that the GeForce GTX 580 we’re testing with is a Gigabyte GV-N580SO-15I clocked down to reference frequencies and equipped with an aftermarket cooler.
The temperatures are right where we’d expect them to be in comparison to the Radeon HD 6970, a card with a similar TDP.
Finally, let’s have a look at the noise generated by these products. Once again, keep in mind that the GeForce GTX 580 isn’t a reference card, and its aftermarket cooler provides an advantage you’d typically have to pay extra for.
Uh-oh. That’s a significant amount of noise, which gives us our first concerning design-oriented issue seen thus far. I’m almost afraid to mention it, because when Chris Angelini railed the Radeon HD 6990 for its noise problems, he got a lot of negative feedback. But I’m not willing to bury it, so there it is.
Concerned about a possible heat sink seating issue, I took the card apart and put it back together again with fresh thermal paste. Now, AMD doesn’t recommend this because it claims the phase-changing thermal interface material it uses enables a few-degree advantage over normal thermal paste. In light of our negative results, though, we had little to lose by at least trying. In the end, my surgical procedure made no difference, and we recorded the same acoustic output playing through Battlefield 3.
Unfortunately, AMD’s time frame for this launch didn’t make testing a second card possible. However, we’ll keep our eyes peeled for a replacement and follow-up should our findings change.
- Radeon HD 7970: A Holiday Surprise That You Can't Buy
- Graphics Core Next: The Southern Islands Architecture
- Bringing It All Together: The Tahiti GPU And Radeon HD 7970
- PRTs, DirectX 11.1, Eyefinity, Stereoscopic 3D, And More
- Test System And Benchmarks
- Synthetic And Tessellation Benchmarks
- Benchmark Results: Battlefield 3
- Benchmark Results: Crysis 2
- Benchmark Results: The Elder Scrolls V: Skyrim
- Benchmark Results: DiRT 3
- Benchmark Results: World Of Warcraft
- Benchmark Results: Batman: Arkham City
- Benchmark Results: Metro 2033
- GPGPU Benchmarks: This Time, With A Preface
- 2D Performance Benchmarks
- Benchmark Results: Overclocking
- Power, Temperature, And Noise Benchmarks
- Radeon HD 7970: Fast, Forward-Looking, But Not Fully Baked