SK hynix HMAA8GR7AJR4N-XN 64GB DDR4-3200 2Rx4 RDIMM Server Memory

SK hynix HMAA8GR7AJR4N-XN is a 64GB DDR4-3200 registered DIMM with ECC. It is dual rank with x4 DRAM, rated CL22 at 1.2V, and its label speed code is PC4-3200AA. The XN suffix marks SK hynix's 3200 MT/s grade, and the R4 in the part number points to x4 devices.

A 64GB 2Rx4 module is the top registered DDR4 capacity most servers use before moving to load-reduced or 3DS DIMMs. It suits virtualization hosts, database servers and storage nodes that need large memory totals while keeping slots free. SK hynix also sells a C-die sibling, HMAA8GR7CJR4N-XN, with the same capacity, rank and speed under a separate part number, so if you have qualified one revision, order that exact number.

Before ordering:

• Match the 2Rx4 organization and capacity of installed modules in each channel where possible.
• DDR4-3200 runs at full speed on 3rd Gen Xeon Scalable and AMD EPYC 7002/7003 platforms. 2nd Gen Xeon Scalable systems run it at up to 2933 MT/s, and older platforms at their own maximum.
• Do not mix RDIMMs with LRDIMMs.
• If HPE, Dell or Lenovo support is important, check whether an OEM-branded part is required.

We have not found a manufacturer or server-OEM source listing specific supported servers, so none are published here. Some resellers list this module as 240-pin; that is an error, as all DDR4 RDIMMs use 288 pins. ICT Devices can quote single modules or volume lots; send us your server model and installed memory.