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Green 288-pin DDR4 RDIMM module with black memory chips and gold edge contacts

A-Tech

A-Tech 16GB DDR4 3200 ECC RDIMM 1Rx4 Server Memory

SKU CH-TWNK-14AHJ

16 GB DDR4 3200 ECC registered server DIMM with CL22 latency and 1.2 V operation

  • Total capacity16 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetSamsung Chipset
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 16 GB DDR4 3200 MHz capacity for demanding server workloads
  • ECC RDIMM with CL22 latency ensures data integrity under load
  • Registered 1Rx4 design reduces electrical load on the memory bus
  • Samsung chipset module built to 1.20 V standard voltage for efficiency
  • 288-pin DIMM form factor fits compatible DDR4 server platforms

16GB DDR4 ECC RDIMM for Servers

This 16GB DDR4 3200 module is an A-Tech replacement for Samsung M393A2K40EB3-CWE. It targets servers and workstations that require registered ECC memory for data integrity. The single-rank 1Rx4 organisation suits platforms qualified for this density. Buyers needing unbuffered UDIMMs or non-ECC modules should look elsewhere.

Standard voltage and registered buffering

Operating at 1.20V, the module runs at standard DDR4 voltage without elevated power draw. Registered buffering places a light load on the memory controller, helping stability in multi-DIMM configurations. No active cooling or special airflow is specified; typical server chassis airflow is sufficient. Systems not validated for registered DIMMs will not support this module.

288-pin DIMM with Samsung chipset

The stick uses a 288-pin DDR4 DIMM form factor built on Samsung chipset components. CL22 latency is set at the rated 3200 speed. Installation follows standard keyed DIMM slots; no extra cables or brackets are involved. Verify your platform’s qualified-vendor list for this exact part number before purchase, as unlisted systems may not train the module.

How it compares

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

Price $144.99
Cheaper than about 57% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $9.06 per GB
Pricier than about 63% 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 nameM393A2K40EB3-CWE
Total capacity16 GB
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.2 V

Questions about this item

How do I install this 288-pin DDR4 RDIMM and what step is often missed?

Align the notch on the module with the slot key, press firmly until both retention clips click, then verify the system recognises the full 16 GB at 3200 MHz in BIOS.

What maintenance or replacement will this ECC registered module need over time?

No routine maintenance is required; if a correctable error count rises or the module fails, replace it with another 1Rx4 DDR4 3200 RDIMM of matching voltage.

What limit appears first when this 1.2 V CL22 module runs sustained workloads?

The CAS latency of 22 cycles at 3200 MHz sets the baseline response time; thermal throttling only occurs if chassis airflow cannot dissipate the standard DDR4 power envelope.

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