Patriot Memory Gaming Series 4 GB (2 x 2 GB) DDR3 PC3-12800 1600 MHz 7-7-7-20 Dual Channel Kit PGS34G1600LLKA Extreme Performance PC3-12800 (1600MHz) Low Latency (7-7-7-20) 100% Tested and Verified on 790FX/GX Socket AM3 motherboards Equipped with lightweight aluminum heat-dispersing shields Lifetime Warranty