HP 647651-081 COMP 8GB DDR3-1600MHZ ECC SRX4 RDIMMAddOn 8 GB DDR3 SDRAM Memory Module 8 GB (1 x 8GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Single rank Memory CL11 1. 50 V ECC Registered 240 pin RDIMM Lifetime Warranty VPN: 647651 081 AM SKU: RSC584104 UPC: 821455324295 RDIMM 8 GB capacity is enough to execute all memory hungry programs simultaneously 1600 MHz memory speed with Registered signal and CL11 latency for great multitasking capability DDR3 SDRAM operates at an effective bus speed with