VisionTek Black Label 4GB Kit of 2 (2x2GB) NB3-12800 CL9 1600 204-Pin DDR3 SODIMM Dual Channel Notebook Memory (900454) Memory type: NB3-12800 SODIMM Data Rate: 1600 CL9 Density Per Module 2 GB 1600MHz, 8-8-8-24, 1.65V, with Intel and AMD support Ultra-high performance for Intel and AMD platforms 2X2GB Dual Channel kit for use in high performance Intel and AMD 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