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Green rectangular DDR4 DIMM with black chips and gold edge contacts

A-Tech

A-Tech 128GB DDR4 3200MHz ECC RDIMM 4Rx4 Server Memory

SKU CH-24ZM-AASBT

A 128GB DDR4 3200MHz ECC RDIMM with CL22 latency and 1.2V operation for server and workstation systems

  • Total capacity128 GB
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetSamsung Chipset
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 128GB capacity supports heavy server workloads
  • DDR4 3200MHz speed delivers high data throughput
  • ECC RDIMM design detects and corrects memory errors
  • Registered signal buffering improves system stability
  • 2V operation matches standard DDR4 voltage

128GB DDR4 3200MHz ECC RDIMM

This registered DDR4 module delivers 128GB of ECC memory for server and workstation platforms that require registered DIMMs. It operates at 3200MHz with a CAS latency of CL22 and uses Samsung chipset components. The 4Rx4 rank organisation suits high-density memory configurations where error correction is mandatory.

Thermals and power at standard voltage

The module runs at the standard DDR4 voltage of 1.20V, keeping power draw predictable in typical server workloads. Registered buffering reduces electrical load on the memory controller, which helps maintain stable thermals across populated slots. No active cooling is required on the DIMM itself under normal operating conditions.

Behaviour under sustained load

ECC circuitry continuously corrects single-bit errors during prolonged compute tasks, preventing data corruption in memory-intensive applications. The registered design maintains signal integrity when all channels are fully populated for extended periods. Verify platform support for 128GB density and 4Rx4 organisation before deployment to ensure sustained stability.

How it compares

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

Price $758.99
Pricier than about 76% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $5.93 per GB
Cheaper 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 nameM393AAG40M32-CAE
Total capacity128 GB
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetSamsung Chipset
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4)
Power
Rated voltage1.2 V

Questions about this item

How do I install this 288-pin DDR4 RDIMM and what step do people often miss?

Align the notch on the module with the slot key, press firmly until both retention clips click, then verify in BIOS that the 128GB module is detected at 3200MHz with ECC active.

What maintenance or replacement will this 128GB ECC RDIMM need over time?

No scheduled maintenance is required; if a correctable error count rises or the module fails POST, replace the individual 128GB DIMM.

What limit appears first when this 4Rx4 registered module runs sustained workloads?

The four-rank electrical load per channel typically caps the number of DIMMs per memory controller before bandwidth or thermal limits are reached.

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