The Saphire HD7770 ran perfect out of the box, no complaints about this VC. The fact is nVidia VC's are more Blizzard game compatible e.g. World of Warcraft & soon Diablo3. MY frames did improve with the GTX560 a bit in Town at peek server time were 20-30fps now 30-40fps. I think the problem is with my CPU I OC'd it to 3.3Ghz & I'm running all 4 cores. Oh well that will have to wait till next year when my rig is 4 years old as planned.
Now the rest of the story, I have my GTX560 factory OC'd up & running. 3DMark scores: GTX560 P4025...HD7770 P3551...both VC's are running at default settings with updated Drivers. Note: both are factory OC'd cards.