Energy consumption and noise
When idle the GTX 770 is very efficient, just like the Titan and the GTX 780. We measured 85.4 watts for the entire system.
Despite the higher clock speed the maximum usage is only a hair above that of the GTX 680.
The cooler on Nvidia's reference card is more silent than that of the GTX 780, and much more so than the GTX 670. The GTX 680 was more silent however.