DELL A3721506 COMP 16GB DDR3-1066MHZ ECC QRX4 RDIMMAddOn FACTORY ORIGINAL 16GB DDR3 1066MHz QR LP Memory For Workstation, Server 16 GB (1 x 16GB) DDR3 1066 PC3 8500 DDR3 SDRAM 1066 MHz Quad rank Memory 1. 50 V ECC Registered 240 pin DIMM Lifetime Warranty VPN: A3721506 AM SKU: RSC687511 UPC: 821455158630 16 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 1066 MHz speed to execute routine softwares at a steady pace Up to 1066 MHz memory