Sapphire HD5770 Crossfire Review
The proof of the pudding, so the old adage goes, is in the eating. It would be almost as wise to state that the proof of performance is in the benchmarks.
3D Mark Vantage
The acid test. Whilst normally I berate 3D Mark Vantage for being totally incapable of providing a baseline for the performance we can expect to see, if nothing else it absolutely loves power. The more the merrier. It can eat everything you can throw at it and come back asking "Please Sir, can I have some more?".
Straight away you can see that our HD5770 Crossfire setup slaughters the HD5850, easily keeps up with a HD5870 and, in overclocked trim, beats it. It seems like ATI haven't nerfed the HD5770 after all.
Codemasters Dirt 2 is a very pretty DX11 race game that is very well optimised providing playable framerates on even average systems. The slight downside is that we don't get those obscene numbers we do with other games, but past 60FPS it's fairly academic anyway.
We see the Vantage results well replicated here with the 5850 comfortably last, the 5770xf keeping up with the 5870 and the OC 5770xf managing to win out again.
Need For Speed Shift
EA rejuvinated the flagging Need For Speed series with Shift, that nicely combined the NFS upgrade mechanics with a much more realistic racing experience. We were so sick of drifting around nighttime streets that it was a breath of fresh air and we still adore it as much as we ever did.
Testing gave us the result we're almost expecting now and the only real thing of note is how low the 5870 Maximum is. Of course when you're benchmarking in "live" play rather than a fixed set there will always be variances.
So much for driving round a track. Can we shoot people in the head now?