IBM 00D4967 COMP 16GB DDR3-1600MHZ ECC DRX4 RDIMMAddOn 16 GB DDR3 SDRAM Memory Module For Server 16 GB (1 x 16GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Dual rank Memory CL11 1. 50 V ECC Registered 240 pin RDIMM Lifetime Warranty VPN: 00D4967 AM SKU: RSC348568 UPC: 821455324219 16 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 1600 MHz memory speed with Registered signal and CL11 latency for great multitasking capability DDR3 SDRAM