Patriot Memory Gaming Series 4 GB (2 x 2GB) 240-Pin DDR3 PC3-12800 1600MHz CAS 9-9-9-24 Enhanced Latency Dual Channel Kit PGS34G1600ELK Extreme Performance PC3-12800 (1600 MHz) Enhanced Latency (9-9-9-24) Equipped with advance aluminum heat-dispersing shields 100% Tested and Verified on Intel P45 and X48 chipsets Lifetime Warranty