HP 708643-B21 COMP 32GB DDR3-1866MHZ ECC QRX4 LRDIMMAddOn 32GB DDR3 SDRAM Memory Module For Server 32 GB (1 x 32GB) DDR3 1866 PC3 14900 DDR3 SDRAM 1866 MHz Quad rank Memory CL13 1. 50 V ECC 240 pin LRDIMM Lifetime Warranty VPN: 708643 B21 AM SKU: RSC550649 UPC: 821455230091 32 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 1866 MHz memory speed with CL13 latency for great multitasking capability DDR3 SDRAM interface synchronizes