COMPUTER MEMORY MODULE 8GB DDR3-1600MHZ 1.35V DR UDIMMAddOn 4GB DDR3 SDRAM Memory Module 4 GB (1 x 4GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Dual rank Memory CL11 1. 35 V Non ECC Unbuffered 240 pin DIMM Lifetime Warranty VPN: AA160D3DRVN 8G SKU: RSC808333 UPC: 821455469781 DIMM 4 GB of memory makes a perfect symmetry with your latest model processor and boosts up your computer's performance 1600 MHz memory speed with Unbuffered signal for great multitasking capability 240 pin pin DDR3 1600 PC3 12800