SK hynix HMA42GR7MFR4N-TF 64GB DDR4-3200 REG ECC server RAM

64GB DDR4-3200 registered ECC module

This single 64GB DDR4-3200 module delivers registered ECC memory for servers and workstations that require error correction and signal buffering. It suits administrators building high-capacity systems where data integrity outweighs raw latency.

PC4-25600 bus speed and registered design

The PC4-25600 rating sets the practical throughput ceiling, while the registered architecture adds one clock cycle of latency to reduce electrical load on the memory controller. Systems must support registered DDR4 DIMMs and ECC functionality; consumer platforms that accept only unbuffered non-ECC memory cannot use this module.

288-pin DIMM at 1.2V with 2Rx4 organisation

The standard 288-pin DIMM form factor fits server motherboards designed for registered memory, and the 1.2V operating voltage matches the DDR4 baseline. Dual-rank 2Rx4 organisation increases density per slot, so fewer modules are needed to reach large totals, but each rank adds capacitive load that can limit maximum populated speed on some boards.