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Green rectangular circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 32GB DDR4 3200MHz ECC UDIMM 2Rx8 CL22 1.2V Server Memory

SKU CH-GMY9-ECE5Q

32 GB DDR4 3200 MHz ECC unbuffered UDIMM with CL22 latency and 1.2 V operation

  • Total capacity32 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetSamsung Chipset
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 32 GB capacity handles large server workloads
  • DDR4 3200 MHz speed moves data quickly
  • ECC unbuffered design corrects memory errors
  • 2 V operation matches DDR4 standard voltage
  • 2Rx8 dual-rank layout increases memory density

32GB DDR4 3200 ECC UDIMM Server Memory

This 32GB DDR4 3200MHz ECC UDIMM module delivers error-correcting memory for server and workstation systems. It operates at 1.2V with CL22 latency and uses a 2Rx8 Samsung chipset configuration. The 288-pin DIMM is a compatible replacement for Samsung M391A4G43AB1-CWE and M391A4G43BB1-CWE part numbers.

Suits ECC UDIMM slots only.

This module fits systems that accept unbuffered ECC DDR4 DIMMs. It will not work in motherboards requiring registered (RDIMM) or load-reduced (LRDIMM) memory. Buyers needing non-ECC memory or registered modules for their platform should look at a different specification.

2Rx8 rank and 288-pin DDR4 interface decide fit

The 2Rx8 organization and 288-pin DDR4 interface are the critical specifications that determine compatibility with the memory controller and slot. Verify the system manual supports this exact rank structure and pin count before purchase.

How it compares

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

Price $296.99
Pricier than about 60% 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 $9.28 per GB
Pricier than about 64% 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 nameM391A4G43AB1-CWE, M391A4G43BB1-CWE
Total capacity32 GB
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL22
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.2 V

Questions about this item

Which A-Tech DDR4 3200 ECC UDIMM capacity should I select?

This listing is for a single 32 GB module built with Samsung chips and a 2Rx8 organisation; choose it when your server or workstation needs one 32 GB stick.

What does the 3200 MHz rating mean once the module is installed?

The memory will run at up to 3200 MT/s at CL22 latency and 1.20 V, provided the platform supports that speed and the BIOS is set accordingly.

How does the DDR4 288-pin UDIMM interface limit performance in practice?

As an unbuffered ECC DIMM it connects directly to the memory controller without a register, so maximum capacity per channel is set by the CPU and motherboard rather than by the module itself.

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