what watts i should use for 2 hd 7790

Solution
A 600-650 watt psu 80+ bronze should be a real good match. It should be able to run on 550 watts ok, but you're better off with the higher wattage for extra room. Also look for a psu that has a single rail, they are usually better for crossfire setups.

SuctionDrop

Honorable
Nov 7, 2013
177
0
10,760
A 600-650 watt psu 80+ bronze should be a real good match. It should be able to run on 550 watts ok, but you're better off with the higher wattage for extra room. Also look for a psu that has a single rail, they are usually better for crossfire setups.
 
Solution