HP Q1V93A COMP 64GB DDR4-2400MHZ ECC QRX4 LRDIMMAddOn 64GB DDR4 SDRAM Memory Module 64 GB (1 x 64GB) DDR4 2400 PC4 19200 DDR4 SDRAM 2400 MHz Quad rank Memory CL15 1. 20 V ECC 288 pin LRDIMM Lifetime Warranty VPN: Q1V93A AM SKU: RSC520260 UPC: 195285061010 LRDIMM 64 GB of memory can produce approx. 10K MIPS and as a result, your system gets more room to run complex apps. 2400 MHz memory speed for great multitasking capability 288 pin pin DDR4 SDRAM interface synchronizes electrical and clock signals