SK hynix HMAA8GL7AMR4N-VK 64GB DDR4 2666 CL19 LRDIMM server RAM

64GB LRDIMM for dense server configs

This SK hynix module delivers 64GB of DDR4 2666 memory in a 288-pin load-reduced form factor. It targets administrators who need maximum capacity per channel without hitting rank limits. The 4Rx4 organisation and ECC support make it suited to virtualisation hosts and in-memory databases. It is not for standard desktop boards that accept only unbuffered UDIMMs.

Thermals and power at rated speed

Operating at 1.20V, the module runs within the standard DDR4 voltage envelope and carries no heat spreader. Load-reduced buffering reduces electrical load on the memory controller, helping keep system power draw lower than an equivalent population of standard RDIMMs. Acoustic impact is negligible because the DIMM itself has no moving parts.

Sustained load behaviour in multi-DIMM arrays

The load-reduced architecture lets each channel accept more ranks than a conventional RDIMM, so bandwidth scales further when all slots are populated. Under continuous heavy traffic the module maintains its CL19 timing at 2666 MT/s without the rank bottlenecks that throttle standard registered DIMMs. It is not for workloads that demand 3200 MT/s speeds or densities beyond 64GB per module.