Patriot Sector 5 DDR3 4 GB  (2 x 2 GB) PC3-16000 2000MHz 9-11-9-27 Enhanced Latency Dual Channel Kit PGV34G2000ELK Extreme Performance PC3-16000 (2000MHz) XMP Ready Enhanced Latency (9-11-9-27) Voltage: 1.65V Equipped with advance aluminum heat-dispersing shields 100% Tested and Verified on Intel P55 chipset w/ Intel Core i5/i7 CPUs Lifetime Warranty