CORSAIR Enthusiast Series CMPSU-550VX 550 W ATX12V V2.2 SLI Ready CrossFire Ready 80 PLUS Certified Active PFC Compatible with Core i7 Power Supply Power Supplies - Newegg.com
Amazon.com: Corsair CMPSU-550VX 550-Watt VX Series 80 Plus Certified Power Supply compatible with Core i7 and Core i5 : Electronics
Corsair VX550W 550W Computer Power Supply CMPSU-550VX B&H Photo