IBM 46W0799 COMP 32GB DDR4-2133MHZ ECC QRX4 LRDIMMAddOn 32GB DDR4 SDRAM Memory Module 32 GB (1 x 32GB) DDR4 2133 PC4 17066 DDR4 SDRAM 2133 MHz Quad rank Memory CL15 1. 20 V ECC 288 pin LRDIMM Lifetime Warranty VPN: 46W0799 AM SKU: RSC905338 UPC: 821455287316 32 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 2133 MHz memory speed for great multitasking capability DDR4 SDRAM operates at an effective bus speed with minimal power