Corsair Pro Series HX520W 80 Plus Modular Power Supply 520W | eBay
Corsair HX520W 520W Computer Power Supply CMPSU-520HX B&H Photo
NeweggBusiness - CORSAIR HX Series CMPSU-520HX 520 W ATX12V v2.2 and EPS12V 2.91 SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC Compatible with Core i7 Power Supply