Posting this for Wow players who are looking to get a video card and can't decide between ati and nvidia. May be helpful to others. Not intended to cause debates or favor a certain brand brand over another.
Setup:
Fresh Win 7 x64 Ultimate install with latest drivers
3770k oc'ed to 4.5Ghz (4.0Ghz wouldn't make a fps difference in wow as wow doesn't fully use all of the cpu)
16GB 1866Mhz RAM
Gigabyte G1.Sniper 3 mb
Onboard sound
PNY GTx 560 ti/Sapphire 7970
560 ti with vsync on (60Hz): msaa 8x, all settings on ultra, 1920x1080 = 40+fps while questing/fying in Pandaria. 55+ fps in Org/25man LFR/10/25man Raids
7970 with vsync on (60Hz): can achieve almost the same fps as above BUT with msaa at 2x. Anything higher (4x, 8x) and fps drops a lot to where it's barely playable (as low as 15 fps) regardless of amd control panel settings or whether you're overclocking the 7970 or not.
As you can see WoW prefers Nvidia cards.