Three Way SLI and Quadfire Benchmarks (2010).
Test 3. Crysis Warhead “Ambush” Benchmark.
3 Way SLI GTX 580 vs. Crossfire HD 5970 - Crysis Warhead
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The Warhead benchmark is significantly more demanding, despite this, the 580s turn in almost identical results for all three runs whilst firmly pointing a finger at the CPU and yelling,
“Any chance of us getting out of third gear?!”.
In contrast, the 5970 exhibit a performance drop off as we move up through the profiles. They hang fire with the 580s at low and medium quality but with maximum AA and AF applied, the memory limitations discussed come into effect, causing severe stuttering and forcing the average frame rate down to under what most would consider a satisfactory minimum of 30 fps.
I was initially very surprised at the 5970s sudden nose dive in performance and reran the test several times to ensure it wasn’t a driver glitch but the same symptoms were evident on each occasion and can be observed in the video. Excluding this particular result, there is very little to separate the two setups but ultimately, the 580s attain an overall lead of 30%.