64GB RDIMM DRX4 3200 16GBCisco 64GB DDR4 SDRAM Memory Module For Server 64 GB DDR4 3200 PC4 25600 DDR4 SDRAM 3200 MHz Dual rank Memory 1. 20 V Registered 288 pin DIMM VPN: HX MR X64G2RW SKU: RSC936924 UPC: 64 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 3200 MHz memory speed for great multitasking capability 288 pin pin DDR4 3200 PC4 25600 interface synchronizes electrical and clock signals for an efficient