HP 516423-S21 COMP 8GB DDR3-1333MHZ ECC 1.5V 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. 50 V ECC Registered 240 pin RDIMM Lifetime Warranty VPN: 516423 S21 AM SKU: RSC764748 UPC: 821455157299 RDIMM 8 GB bar will run multiple applications together and enhance your computer's performance 1333 MHz speed and Registered signal to execute routine softwares at a steady pace DDR3 SDRAM interface synchronizes electrical