VisionTek Black Label 4GB Kit of 2 (2x2GB) PC3-12800 CL9 1600 LP DDR3 DIMM Desktop Memory (900401) Ultra-high performance 4GB DDR3 (2X2GB) Dual Channel kit for Intel Core i3, i5, i7 Dual Channel processors and Triple Channel processors. Includes VisionTek High Performance Very Low Profile heat spreaders 1600MHz, 9-9-9-24, 1.65V, with Intel and AMD support. 2X2GB Dual Channel kit for use in high performance Intel Core i3, i5, i7 Dual Channel and Triple Channel systems. Lifetime warranty: This DDR3 memory kit is built to last under the most demanding, processor intensive environments, and is backed by a limited Lifetime warranty. Memory type: PC3-12800 -clamp Data Rate: 1600 CL9 Density Per Module 2 GB