HP 805358-B21 COMP 64GB DDR4-2400MHZ ECC QRX4 LRDIMMAddOn HP 64GB DDR4 SDRAM Memory Module 64 GB (1 x 64GB) DDR4 2400 PC4 19200 DDR4 SDRAM 2400 MHz Quad rank Memory CL17 1. 20 V ECC 288 pin LRDIMM Lifetime Warranty VPN: 805358 B21 AM SKU: RSC752721 UPC: 821455639740 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 of memory speed with CL17 latency skillfully manages the variety of apps and computational tasks DDR4 SDRAM