SK hynix HMAA8GL7AMR4N-VK 64GB DDR4 2666 Load Reduced DIMM Intel S7200AP server RAM

64GB DDR4 Load Reduced DIMM

This 64GB DDR4 2666 Load Reduced DIMM from SK hynix is built for Intel S7200AP servers that require ECC memory. It targets administrators expanding virtualization hosts, in-memory databases or high-performance computing clusters. The module uses a 288-pin DDR4 SDRAM form factor and operates at 1.20V with CL19 latency. It is not for standard desktops or workstations that accept only unbuffered UDIMMs.

DDR4 2666 speed and LRDIMM architecture

The DDR4 2666 interface caps transfer rates at PC4 21300, limiting peak bandwidth compared to faster DDR4 grades. Load Reduced technology removes the rank-per-channel ceiling found on standard RDIMMs, allowing more modules per channel for higher total capacity. Systems not designed for LRDIMMs cannot use this module, and mixing it with registered or unbuffered ECC DIMMs is unsupported. The 4Rx4 organisation helps density but does not overcome the bus speed limit.

288-pin installation and compatibility checks

Installation follows the standard 288-pin DDR4 slot procedure, but the server must explicitly support Load Reduced DIMMs in its memory controller and BIOS. A common error is inserting these modules into platforms qualified only for RDIMMs or UDIMMs, which prevents boot. Verify the Intel S7200AP memory population rules for 4Rx4 LRDIMMs before purchasing. No heat spreader is fitted, so airflow across the modules must be maintained by the chassis design.