LENOVO 0B47378 COMP 8GB DDR3-1600MHZ ECC DRX8 UDIMMAddOn 8 GB DDR3 SDRAM Memory Module For Server 8 GB (1 x 8GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Dual rank Memory CL11 1. 50 V ECC Unbuffered 240 pin UDIMM Lifetime Warranty VPN: 0B47378 AM SKU: RSC855644 UPC: 821455323892 8 GB bar will run multiple applications together and enhance your computer's performance 1600 MHz of memory speed allows you to browse web, listen to songs and use routine software simultaneously 240 pin pin DDR3 1600 PC3 12800