XFX TS Series P1550SXXB9 550 W Power Supply - Newegg.com
XFX TS Bronze Series 550W Power Supply Unit P1550SGREN B&H Photo
XFX TS Series 550W Power Supply Unit - 80 Plus Bronze Certified, Crossfire and SLI Ready, 135mm Fan, Haswell Ready Active PFC, Single +12V Rail - P1550SXXB9 at TigerDirect.com