VisionTek 4GB DDR3 1333 MHz (PC3-10600) CL9 SODIMM, Notebook Memory - 900449 Memory type: NB3-10600 SODIMM Data Rate: 1333 CL9 Density Per Module 4 GB 1333MHz, 9-9-9-24, 1.5V, with Intel and AMD support Ultra-high performance for Intel and AMD platforms 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