HP 647650-171 COMP 8GB DDR3-1333MHZ ECC 1.35V DR RDIMMAddOn 8 GB DDR3 SDRAM Memory Module For Server 8 GB (1 x 8GB) DDR3 1333 PC3 10600 DDR3 SDRAM 1333 MHz Dual rank Memory CL9 1. 35 V ECC Registered 240 pin RDIMM Lifetime Warranty VPN: 647650 171 AM SKU: RSC314533 UPC: 821455579619 8 GB bar will run multiple applications together and enhance your computer's performance 1333 MHz speed with Registered signal and CL9 latency to execute routine softwares at a steady pace 240 pin pin DDR3 1333 PC3 10600