EVGA 500 B1, 80+ BRONZE 500W Power Supply, 3 Year Warranty, Includes FREE Power On Self Tester 100-B1-0500-KR 3 Year Warranty. For a LIMITED TIME, +2 extra years with registration. (Valid from 6/5/2018 - 12/31/2018) EVGA 500 B1 - "Performance Meets Value" 80 PLUS Bronze certified, with up to 85% efficiency under typical loads Fan Size / Bearing: 120mm Sleeve Bearing Heavy-duty protections, including OVP, UVP, OCP, OPP, and SCP