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Green rectangular DDR4 server memory module with black chips and gold edge connectors

A-Tech

A-Tech 32GB DDR4 2133MHz ECC LRDIMM 4Rx4 Server Memory

SKU CH-RQ2B-WE6AH

32 GB DDR4 2133 MHz ECC load-reduced DIMM for server and workstation upgrades

  • Total capacity32 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetSamsung Chipset
  • CAS latencyCL15
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • 32 GB capacity handles large server workloads
  • DDR4 2133 MHz speed supports PC4-17000 bandwidth
  • ECC LRDIMM design with 4Rx4 rank improves data integrity
  • 20 V operation meets DDR4 standard voltage
  • 288-pin DIMM form factor fits compatible server slots

Server Memory Upgrade

This 32GB DDR4 module is a compatible replacement for Samsung M386A4G40DM0-CPB0Q and M386A4G40DM0-CPB2Q. It targets administrators expanding memory capacity in supported server and workstation platforms. The ECC Load Reduced design helps maintain data integrity under sustained workloads.

Thermals and Power Draw

Operating at 1.20V standard DDR4 voltage, the module runs within normal power envelopes for registered server memory. The Load Reduced architecture reduces electrical load on the memory bus, which can assist thermal headroom in dense configurations. No active cooling is present on the module itself.

Upgrade Context

The 32GB capacity suits systems that require high-density DIMMs to reach larger aggregate memory totals. It replaces lower-capacity DDR4 LRDIMM modules in platforms qualified for 4Rx4 organisation and 2133MHz speed. Verify your system's qualified vendor list before purchase, as not all DDR4 servers support Load Reduced DIMMs or this rank configuration.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $90.99
Cheaper than about 72% of the 6,523 comparable items (median $188.99).
Total capacity 32 GB
Typical for this category: the median of 6,064 items is 32 GB.
Price per GB $2.84 per GB
Cheaper than about 90% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Samsung
Model nameM386A4G40DM0-CPB0Q, M386A4G40DM0-CPB2Q
Total capacity32 GB
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL15
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Power
Rated voltage1.2 V

Questions about this item

How is the 288-pin LRDIMM seated, and which alignment step is often missed?

Align the module's notch with the slot key, press straight down until both side clips click, and verify the 1.2 V DDR4 module sits flush — the load-reduced design adds height so the clips must fully engage.

What maintenance or replacement will the 32 GB ECC module need later?

No routine maintenance is required; if a correctable error count climbs or the system logs uncorrectable ECC events, replace the module — otherwise it runs for the system's life.

What limit appears first when the 4Rx4 stick runs at 2133 MHz under sustained load?

The four-rank electrical load on the memory controller becomes the bottleneck before thermal throttling, capping how many such modules the platform can populate at full speed.

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