This didn't take long!
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These benchmarks compare the 768MB and 1GB flavours of the NVIDIA GTX460 against the 960/1120 shader (6850 and 6870) Radeon cards. Both are tested using DX11 titles.
First up, we have Dirt 2 results - running Ultra DX11 at 1920x1200, 8xAA, 16xAF.

The results speak for themselves - The HD6850 is 33% faster than the 768MB GTX460 and over 10% faster than the 1GB GTX460.
Secondly, we have Battleforge - this one is run on 5760x1080 - DX10.1 mode, comparing HD6850 Crossfire to GTX460 SLI.

One of the big criticisms (even though I personally think it's virtually useless right now) of the 5000 series, was it's lack of tessellation performance. But, comparing an older architecture, to a brand new architecture (Fermi) is a bit harsh - now that AMD have caught up and put tessellation on their GPU's - the fight seems to be quite strong.


