DIY spirit with success. You will go far!
As long as temps are fine, you're good to go. I might change load line calibration to a "performance" or "extreme" setting, and try dropping the volts a bit in BIOS.
Depends on what you had your 7970 clocked at. 1000MHz+ and it generally beats out the 770. If your 7970 was lower than that, you'll see an improvement.
But, for triple monitor gaming, the 780 will definitely have improved performance compared to the 770.
This review has 5760x1080 data.. The 770 is basically the same thing as the 680.
thanks for response. Temps are pretty much ideal I think, for my setup. Kind of at 35 idle 65 load tops or might hit 70 on prime 95...I think thats fine right?