HP 647658-081 COMP 8GB DDR3-1333MHZ ECC 1.5V DR UDIMMAddOn 8GB DDR3 SDRAM Memory Module For Server 8 GB (1 x 8GB) DDR3 1333 PC3 10664 DDR3 SDRAM 1333 MHz Dual rank Memory CL9 1. 50 V ECC Unbuffered 240 pin DIMM Lifetime Warranty VPN: 647658 081 AM SKU: RSC407180 UPC: 821455323427 DIMM 8 GB capacity is enough to execute all memory hungry programs simultaneously 1333 MHz speed with Unbuffered signal and CL9 latency to execute routine softwares at a steady pace 240 pin pin DDR3 SDRAM interface multiplexes