The recommended PSU is more of a "safe" range. My 7950 recommended a 500W at least... There is no way the 7790 and 7950 are similar in power draw.
If you wanted to be on the safe side, up your PSU to a 550W
Reply to fatboytyler
October 8, 2013 6:44:25 AM
So will it work?
Corsair i think is a good quality. i think it will work.
Try first, then you will learn from your experience.
Update: Better get higher PSU.Just in case you want to upgrade in the future, you dont have to be worry about your PSU.