8GB 2x 4GB DDR2 PC2-6400 800MHz 200 pin SODIMM Laptop Memory RAM for Compaq Presario Notebook CQ45 CQ56 CQ60 (PARTS-QUICK BRAND) Halogen Free; ROHS Speed: PC2-6400 DDR2 800MHz Form Factor: 200 pin SODIMM Capacity: 8GB 2 X 4GB Kit Warranty: Lifetime