Im looking to upgrade from my 560ti to ether the 680 or the 7970. I want to know what would be the best. I have 2 monitors (1920x1080) and play all kinds of video games. Budget is 550 tops!!! im looking at aftermarket cards (non-reference) msi twin frozr preferably. I also will be overclocking. Im a total nvidia fan boy but i feel the 7970 would give better performance ? I want the 680 but for the same money i could get the 7970. Give me advice !!!
From what I can tell there is very little difference in performance. The 680 fairs better in Nvidia focused games, and the 7970 with AMD games.
If noise and power consumption are a consideration the gtx 680 seems to perform better but it seems to cost more.
If you're an Nvidia fanboy, have the cash spare and won't consider the 670 (slightly less performance yet much cheaper) then go with the GTX 680.
I'm also an Nvidia fanboy so I would suggest the GTX 680. HD 7970 could give you better frame rate but i'm sure it would not be on a significant margin and MOST importantly... I have less problems with Nvidia and they always give me Constant Frame rate.
As long as you don't get too high temperatures or voltages it's fine. Most cards will do a nice little overclock without raising voltages or getting excessive temperatures, so that's basically free (and worry-free) performance.
i raise the volts a little on the 560ti (not sure exactly) but i still idle 35-40c and hit 75c under 100% use n it doesnt go any higher. do you think that would affect the 560ti at all?
That should be fine. They can technically cope with temps up to around 100-105c, though that would wear the card out real quick. I personally try not to go too close to 90c in stress tests (Furmark etc); in games it'll never quite get as hot.