8GB Kit 2 x 4GB Memory Upgrade for HP Pavilion g6-2005ax PC3-12800 1600MHz DDR3 SODIMM RAM (PARTS-QUICK BRAND) Capacity: 8GB Kit 2 x 4GB Speed: PC3-12800 DDR3 1600MHz Form Factor: 204 pin SODIMM Halogen Free; ROHS Warranty: Lifetime