HP 715283-001 COMP 8GB DDR3-1600MHZ ECC DRX4 RDIMMAddOn 8 GB DDR3 SDRAM Memory Module 8 GB (1 x 8GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Dual rank Memory CL11 1. 35 V ECC Registered 240 pin RDIMM Lifetime Warranty VPN: 715283 001 AM SKU: RSC847799 UPC: 821455324196 8 GB capacity is enough to execute all memory hungry programs simultaneously 1600 MHz of memory speed allows you to browse web, listen to songs and use routine software simultaneously 240 pin pin DDR3 1600 PC3 12800 interface