SYS-220GP-TNR Dual Socket P+ (LGA-4189) 3rd Gen Intel® Xeon® Scalable Processors,Intel® C621A Chipset,16 DIMM Slots;Up to 4TB DRAM;Up to 4TB Intel® Optane™ Persistent Memory (up to 6TB with DRAM);3200/2933/2666 ECC DDR4 LRDIMM;RDIMM; Bulk