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Green circuit board 128GB DDR4 288-pin LRDIMM memory module

A-Tech

A-Tech 128GB DDR4 2933MHz ECC LRDIMM Server Memory

SKU CH-THZS-WNEQP

A 128GB DDR4 2933MHz ECC LRDIMM module with CL21 latency and 1.2V operation

  • Capacity128GB
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2933 (PC4 23400)
  • CAS LatencyCL21
  • Voltage1.20V
  • ECCYes
  • 128GB capacity handles heavy server workloads
  • DDR4 2933MHz speed accelerates data throughput
  • ECC LRDIMM technology protects data integrity
  • CL21 latency with 1.20V operation balances performance and efficiency
  • 288-pin DDR4 form factor fits compatible server slots

Server Memory Upgrade

This A-Tech module delivers 128GB of DDR4 ECC LRDIMM memory at 2933MHz with CL21 latency and 1.20V operation. The 288-pin form factor uses a Load Reduced design to support high-density server configurations. It serves as a direct replacement for Samsung M386AAG40MMB-CVF and M386AAG40MM2-CVF part numbers.

Compatibility Focus

Suits administrators upgrading or repairing servers that specifically require 128GB DDR4 2933MHz ECC LRDIMM modules matching the listed Samsung part numbers. Builders needing standard RDIMM, non-ECC UDIMM, different capacities, speeds, voltages or form factors should look elsewhere because this module will not fit or function in those roles.

Deciding Specification

The 4DRx4/4Rx4 rank organisation combined with Load Reduced ECC signalling is the single attribute that determines whether this module works in a given server platform; only systems qualified for this exact rank and buffer type will accept it.

Highlights

  • 128GB capacity handles heavy server workloads
  • DDR4 2933MHz speed accelerates data throughput
  • ECC LRDIMM technology protects data integrity
  • CL21 latency with 1.20V operation balances performance and efficiency
  • 288-pin DDR4 form factor fits compatible server slots

Specifications

BrandA-Tech
SeriesSamsung RAM Equivalent Replacement Memory
ModelM386AAG40MMB-CVF, M386AAG40MM2-CVF
Part NumberM386AAG40MMB-CVF, M386AAG40MM2-CVF
Capacity128GB
Type288-Pin DDR4 SDRAM
SpeedDDR4 2933 (PC4 23400)
CAS LatencyCL21
Voltage1.20V
ECCYes
Buffered/RegisteredLoad Reduced
Rank4DRx4/4Rx4
ChipsetMajor Brand Chipset
Heat SpreaderNo
FeaturesEquivalent Replacement for Samsung M386AAG40MMB-CVF, M386AAG40MM2-CVF

Questions about this item

Will the CL21 latency become a bottleneck during sustained server workloads?

CL21 is the rated CAS latency for this 2933 MHz DDR4 LRDIMM; actual throughput under sustained load depends on your platform's memory controller and rank interleaving.

Does the 1.20 V LRDIMM run hotter or louder than a standard RDIMM when fully populated all day?

Load-reduced modules buffer the command and address bus, lowering electrical load on the memory controller; they do not add active cooling, so system airflow determines temperature and noise.

What server platform must I already own to use this 288-pin 4DRx4 module?

You need a DDR4 server motherboard or chassis qualified for 128 GB LRDIMMs at 2933 MHz with 4-rank x4 organisation; verify the vendor's qualified-vendor list before purchase.

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