I recently purchased an Evga GTX 670 FTW LE card and installed it a couple days ago. It's a great card, but there is a constant screen flicker that occurs about 90% of the time regardless of what I'm doing, whether it be web browsing or playing a game. It's not the worst thing in the world, but I didn't pay near $400 dollars to get a card that does this. I read other forums about this same issue, but they don't ever seem to be as severe as mine. I've read that it's a driver issue, but I'm not so sure as I only see this issue with other "FTW" cards. Right now I'm kinda on the fence whether or not I should return it and get something cheaper(this card does create a small bottleneck). I'm also having weird usage when I play games. Maybe it's because the card is very powerful, but in BF3@Ultra preset, the card only goes around 80% usage.
In short, though, if the screen flicker issue is solvable, then I won't worry about returning the card.
Turn Nvidia Vertical Sync on.
Is it 80% memory usage?
Check temperatures and if it's trapped inside a desk (with one of those tower slots) take it out, because those tend to raise temperatures by as much as 10C
Monitor specs? And what are your GPU temps stable and during games?
I currently am playing at 1600x900, but when I go back for my spring semester I'll go to a 1280x1024(using my dad's monitor right now). The temps seem to be pretty stable. At full load, they stay around low 70s.
Also, I haven't tried my new setup with my old monitor(1280x1024) yet.