Is 800 Watts sufficient enough for two r9 280x's in crossfire?

RollTide615

Honorable
Apr 11, 2013
21
0
10,510
I currently have a Corsair GS-800W PSU and was wondering if that would be sufficient enough to run two r9 280x's in a crossfire setup?

My current setup is:
AMD FX-8350 (with cooler master hyper 212+ cooler)
1TB WD Blue HDD
(2x) Gigabyte 7870's Ghz Edition (Crossfired)
Case has 3 fans total (2 200mm and 1 120mm)

Just wondering if with my current setup i'd have enough juice to power two 280x's?