A-Tech 64GB DDR4 2400 ECC RDIMM CL17 1.20V 2S2Rx4 Server Memory

Server-grade capacity

This 64GB DDR4 module delivers registered ECC memory for servers and workstations that require error correction and signal integrity at scale. The 2S2Rx4 organisation provides four logical ranks per DIMM, allowing dense population of memory channels in multi-socket platforms. It suits administrators who need maximum capacity per slot without moving to LRDIMM or 3DS topologies.

Registered DIMM build

The 288-pin RDIMM form factor fits standard DDR4 server slots and presents a registered interface that reduces electrical load on the memory controller. Major-brand chips operate at 1.20V with CL17 timing at 2400MHz, matching the PC4-19200 data rate specified by the platform. ECC circuitry corrects single-bit errors and detects multi-bit faults to protect data integrity in continuous workloads.

Replaces Samsung M393A8K40B21-CTC

This module is a direct equivalent for the listed Samsung part numbers, enabling like-for-like upgrades or capacity expansion in qualified systems. The jump is worthwhile when existing slots are populated with lower-density RDIMMs and the platform supports 4Rx4 registered modules. Buyers who need non-ECC unbuffered memory or speeds beyond DDR4-2400 should verify platform requirements before ordering.