A-Tech 64GB DDR4 2133MHz ECC RDIMM CL15 1.2V 288-Pin Server Memory

High-capacity server memory upgrade

This A-Tech module delivers 64GB of DDR4 ECC RDIMM capacity at 2133MHz with CL15 latency. It is built for server and workstation platforms that require registered memory and error-correcting code for data integrity. The single-module design simplifies capacity expansion in systems with limited DIMM slots. It serves as a direct replacement for the Samsung M393A8G40D40-CRB part number.

Registered design and standard voltage

The 288-pin RDIMM form factor uses a registered buffer to reduce electrical load on the memory controller, supporting stable operation in multi-module configurations. Operating at the standard 1.2V DDR4 voltage, it draws no more power than typical server memory. The 2S4Rx4 (8Rx4) rank organisation with 3DS/TSV chip stacking enables the high density within a single module. Samsung chipset components underlie the module's construction.

Replaces lower-density DDR4 RDIMMs

This module upgrades systems currently populated with smaller-capacity registered ECC DIMMs, consolidating memory into fewer slots for future expansion headroom. The jump is worthwhile when workloads exceed the capacity of existing modules or when slot count limits total achievable memory. It is not suited for platforms that require unbuffered UDIMMs, non-ECC memory, or speeds beyond the DDR4 2133MHz specification.