HP 731765-S21 COMP 8GB DDR3-1600MHZ ECC SRX4 RDIMMAddOn 8 GB DDR3 SDRAM Memory Module For Server 8 GB (1 x 8GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Single rank Memory CL11 1. 35 V ECC Registered 240 pin RDIMM Lifetime Warranty VPN: 731765 S21 AM SKU: RSC674937 UPC: 821455234174 8 GB capacity is enough to execute all memory hungry programs simultaneously 1600 MHz of memory speed with CL11 latency skillfully manages the variety of apps and computational tasks DDR3 SDRAM interface multiplexes 2 bit