Is there some reason you think it wouldnt be good enough?
I believe that has 4 12volt rails.. not my favorite setup.. but provided its properly hooked up and load balanced correctly it should be fine.
Does have 4 12 volt rails, correct. Just asked cause had some freeze problems on occasion. Checked numerous site calculators and out of the 10 i tried, i found 2 that said it might need more towards 850 to 900 of course assuming max load. (rest were mainly about 650 on avg). CyberpowerPC built it originally