boxleitnerb
Platinum Member
- Nov 1, 2011
- 2,605
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It's not memory bandwidth since HD7850 can outperform GTX680 in Sleeping Dogs.
Not it cannot. Sontin is right there, look at the numbers. All cards are faster at 5760x1080 than at 2560x1600...yeah right.
And Sleeping Dogs doesn't support MSAA. And yet again: 7870 LE is Tahiti too, and that is not faster than GK104 in Sleeping Dogs. Compute is not the problem here, but raw power - especially for SSAA as all operations have to be performed four times.
Most important:
With all this talk about compute...how would one actually know how extensively a title uses compute operations and how that affects performance on different architectures? Research is all and fine and saying Sleeping Dogs uses DirectCompute as part of their SSAA approach for example. But it is impossible for anyone of us to distinguish if it is raw power or special compute mojo that actually makes the difference. We are not programmers nor do we have the extensive knowledge that GPU architects to.
I find it daring to claim "title A is compute heavy but title B is not/less so". How do you know? You possibly cannot. I would strongly suggest being more careful with these statements and take similarly speced GPUs under consideration when discussing these things, like 7870 LE vs GTX670/680. So as to exclude a seizable difference in raw power as a possible explanation for performance comparisons.
Because then the argument that GCN dominates Kepler in certain games due to compute falls completely on its ass
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