Do I need two power supplies?

zdsage

Honorable
Dec 2, 2013
37
0
10,530
Do I NEED 2 power supplies for Asus AMD Radeon R9 280X 3GB GDDR5 2DVI/4DisplayPort PCI-Express Video Card (R9280X-DC2T-3GD5-V2). I already ordered a Rosewill 750W 80 PLUS Platinum Certified Power Supply FORTRESS-750