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Green rectangular DDR4 LRDIMM module with gold contacts and black chips

A-Tech

A-Tech 64GB DDR4 2666 ECC LRDIMM 4Rx4 server RAM

SKU CH-1P57-3V36D

64 GB DDR4 2666 ECC load-reduced server DIMM with CL19 latency and 1.2 V operation

  • Capacity64GB
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Voltage1.20V
  • ECCYes
  • Buffered/RegisteredLoad Reduced
  • High-density 64 GB capacity handles heavy server workloads
  • DDR4 2666 MHz speed delivers fast data throughput
  • ECC LRDIMM design maintains data integrity under load
  • 20 V operation reduces power draw per module
  • 288-pin DIMM form factor fits standard server slots

Capacity and form factor

This 64 GB DDR4 module uses the 288-pin LRDIMM form factor and carries a 4Rx4 rank configuration. It is built for servers and workstations that require high-density memory with error-correcting code support. The load-reduced design helps reduce electrical load on the memory bus when many modules are installed.

DDR4 2666 interface limits

The module operates at 2666 MHz with a CAS latency of CL19 and runs at the standard 1.20 V DDR4 voltage. Bandwidth is defined by the PC4-21300 rating, which sets the maximum theoretical throughput for this speed grade. Systems that only support lower DDR4 speeds will clock the module down to the highest compatible frequency.

Workload headroom

A single 64 GB LRDIMM suits virtualization hosts, database servers and compute nodes that need large memory footprints per slot. The 4Rx4 organisation provides capacity density but may limit maximum module count on platforms with rank-per-channel restrictions. Buyers needing higher frequencies or lower latencies should verify platform support before purchase.

Highlights

  • High-density 64 GB capacity handles heavy server workloads
  • DDR4 2666 MHz speed delivers fast data throughput
  • ECC LRDIMM design maintains data integrity under load
  • 20 V operation reduces power draw per module
  • 288-pin DIMM form factor fits standard server slots

Specifications

BrandA-Tech
SeriesCompatible Replacement for Micron
ModelMTA72ASS8G72LZ-2G6D2, MTA72ASS8G72LZ-2G6J2, MTA72ASS8G72LZ-2G6R2
Capacity64GB
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4Rx4
ChipsetMicron Chipset
FeaturesMTA72ASS8G72LZ-2G6D2, MTA72ASS8G72LZ-2G6J2, MTA72ASS8G72LZ-2G6R2

Questions about this item

Should I choose the 64GB 4Rx4 module or look for a different rank configuration?

This module is a single 64GB stick organised as 4Rx4; select it when your server requires a quad-rank load-reduced DIMM at that density.

What does the DDR4 2666 speed mean once the module is installed in a server?

The memory will run at up to 2666 MT/s with CL19 latency at the standard 1.20 V DDR4 voltage.

Does the 288-pin DDR4 LRDIMM interface limit the bandwidth in practice?

The DDR4 interface caps the module at the PC4-21300 data rate, so peak throughput is fixed by that standard.

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