VisionTek Black Label 4GB Kit of 2 (2x2GB) PC3-10600 CL9 1333 DDR3 DIMM Desktop Memory (900423) Ultra-high performance 4GB DDR3 (2X2GB) Dual Channel kit for Intel Core i3, i5, i7 Dual Channel processors and Triple Channel processors. 1333MHz, 9-9-9-24, 1.5V, 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: PC3-10600 Data Rate: 1333 CL9 Density Per Module 2 GB