DELL SNPRVY55C/8G COMP 8GB DDR3-1600MHZ ECC DRX4 RDIMMAddOn 8 GB DDR3 SDRAM Memory Module 8 GB (1 x 8GB) DDR3 1600 PC3 12800 DDR3 SDRAM 1600 MHz Dual rank Memory CL11 1. 35 V ECC Registered 240 pin RDIMM Lifetime Warranty VPN: SNPRVY55C 8G AM SKU: RSC850598 UPC: 821455233825 RDIMM 8 GB bar will run multiple applications together and enhance your computer's performance 1600 MHz memory speed for great multitasking capability 240 pin pin DDR3 1600 PC3 12800 interface multiplexes 2 bit data from memory cell