Hold onto your collective rear-ends. A second Radeon HD 7950 adds 96% to the single-card result without anti-aliasing and 98% when you apply 4x MSAA, making Battlefield 3 more than playable at 2560x1600 with Ultra quality settings.
Knowing what we know about the 7950’s weakness in Crysis 2 under DirectX 9, you’re going to want to stick with DirectX 11. A second Radeon HD 7950 increases performance by 92%. That’s enough of a speed-up to wiggle past a pair of GeForce GTX 580s and absolutely destroy the four processors wielded by two Radeon HD 6990s.
We couldn’t come up with any good reason to explain the quad-GPU failure under DirectX 11, but a far better DirectX 9 result makes it pretty clear that the problem is related to API choice.
- AMD's Tahiti Pro Goes Heads-Up With Nvidia's GF110
- Tessellation Performance And Audio Output
- Overclocking With XFX’s R7950 Black Edition
- Test Setup And Benchmarks
- Benchmark Results: 3DMark 11
- Benchmark Results: Battlefield 3
- Benchmark Results: Crysis 2
- Benchmark Results: The Elder Scrolls V: Skyrim
- Benchmark Results: DiRT 3
- Benchmark Results: World Of Warcraft: Cataclysm
- Benchmark Results: Metro 2033
- Benchmark Results: Sandra 2012
- Benchmark Results: MediaEspresso 6.5 And LuxMark
- Benchmark Results: vReveal
- 2D Performance Via GDI And GDI+
- CrossFire And SLI: 3DMark 11
- CrossFire And SLI: Battlefield 3 And Crysis 2
- CrossFire And SLI: DiRT 3, Metro 2033, And LuxMark
- Power, Temperatures, And Noise
- CrossFire And SLI: Power Consumption And Noise
- One Year Later: A Great GeForce GTX 580 Alternative