I am running 24/7 4.8 GHz at 1.408v. Quite good for the 3970X.
I can hit 5 GHz with my setup and 1.45v, but there just isn't enough return to warrant another .05v through this kilobuck CPU.
GTX 780's idle at about 28c and peak around 55c at full load.
Watercooling Parts List: https://drive.google.com/file/d/0Byeidnbd2VoZUG9VTzQ0VzZwM0E/edit?usp=sharing