Originally Posted by Jeffy
The Nvidia 580 is $499 while the 6970 is $340-ish (Visiontek) right now. That's a BIG gap in price. The 580's competitor is/was the 5970 Black Edition which was a 2xCPU card but I think the 580 still beat it out but only slightly.
At the high end they're talking 0-15% difference in performance. That might be the difference between 49 and 44 FPS, at the same quality. For $150 that is totally worth it to me. I'm not pushing my rig anywhere near to the bleeding edge anyway. By the time that 15% was gamebreaking to me, I would be well beyond the upgrade point anyway.
*edit, as it is now playing battlefield bad company 2 at 1920x1080 on a 42" monitor, with a 5870, phenomIIx3, and 8 gigs of ram, with all settings as high as they will go I see anywhere from 40-60FPS in a full 32 player server. It will maintain that performance all day and night long.
If I was running an eyefinity setup, or trying to push out 2560x1600 on a 30" monitor I'd probably have to tone down the settings. That's where that 15% lives. On the edge.