Does anybody know what the max watt consumption of the EVGA GeForce GTX 770 Superclocked with ACX Cooler 4 GB GDDR5 is? Also, does any body know the max watt consumption of the Gigabyte AMD Radeon HD 7850 2 GB GDDR5 is? I currently own the Gigabyte 7850 and I'm looking to upgrade to the 770 and I'm trying to figure out if my PSU could sufficently handle the 770. I have a 600 watt PSU.