HP H6Y77AA COMP 8GB DDR3-1600MHZ 1.35V DR SODIMMAddOn 8GB DDR3 SDRAM Memory Module For Notebook 8 GB (1 x 8GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Dual rank Memory CL11 1. 35 V Non ECC Unbuffered 204 pin SoDIMM Lifetime Warranty VPN: H6Y77AA AA SKU: RSC510188 UPC: 821455321997 8 GB capacity is enough to execute all memory hungry programs simultaneously 1600 MHz memory speed with CL11 latency for great multitasking capability 1600 MHz memory speed with Unbuffered signal and CL11 latency for