AcceleratorX
Youngling
Based on charts in the below link I think the 7770 is catching up to the 6850 with newer drivers. Have a look:
iXBT Labs - i3DSpeed, April 2012 - Page 2: Performance charts
Though it's still on average 10% slower, each new driver brings it closer. For this reason I'd say a 7770 is a better bet now and may be better than the 6850 in the future.
iXBT Labs - i3DSpeed, April 2012 - Page 2: Performance charts
Though it's still on average 10% slower, each new driver brings it closer. For this reason I'd say a 7770 is a better bet now and may be better than the 6850 in the future.