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Two green 288-pin DDR4 server DIMMs with black chips, no heat spreader

A-Tech

A-Tech 256GB (2x128GB) DDR4 3200 ECC LRDIMM 2S2Rx4 Server RAM

SKU CH-5EC5-34QS7

A 256 GB dual-channel kit of two 128 GB DDR4 3200 ECC LRDIMM modules with CL22 latency and 1.2 V operation for compatible servers and workstations

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL22
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced

Capacity 256GB (2 x 128GB)

  • 256 GB total capacity for heavy server workloads
  • 2 × 128 GB dual-channel kit maximises memory bandwidth
  • DDR4 3200 MHz speed accelerates data throughput
  • ECC load-reduced design corrects errors without taxing the memory controller
  • 2 V standard voltage keeps power draw low

Server-grade capacity and ECC reliability

This 256 GB kit provides two 128 GB DDR4 modules built for servers and workstations that require error-correcting memory. The load-reduced design lowers electrical load on the memory bus, allowing higher densities than standard registered DIMMs. It is intended for administrators expanding memory in compatible enterprise platforms.

Dual-channel kit with 288-pin DDR4 interface

The pair installs as a matched dual-channel set into 288-pin DDR4 slots that support LRDIMM modules. Each stick operates at 1.20 V and uses 3DS/TSV quad-rank organisation, so the platform must explicitly accept 2S2Rx4 ECC LRDIMMs. No heat spreader is fitted, leaving clearance for dense slot populations.

Sustained throughput at CL22 latency

Rated at 3200 MHz with CAS latency 22, the modules deliver steady bandwidth for virtualisation, database and compute workloads that run continuously. The major-brand chips and full ECC coverage maintain data integrity over long periods without the error accumulation seen in non-ECC memory.

How it compares

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

Price $2,474.99
Pricier than about 89% of the 6,523 comparable items (median $188.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
Price per GB $9.67 per GB
Pricier than about 66% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR4 Server Memory RAM
Model nameA-Tech 128 GB 2S2Rx4 PC4-3200AA-L
Part numberAT128G2D4D3200LQ4N12 V
Total capacity256 GB (2 × 128 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL22
ECC supportYes
Buffer typeLoad Reduced
Memory rank2S2Rx4 (4Rx4 3DS/TSV)
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

3 more in the same range

Questions about this item

Will the 1.20 V voltage limit thermal throttling under sustained load?

The modules run at standard 1.20 V DDR4 voltage with no heat spreader, so sustained use relies on server airflow rather than onboard cooling.

How much noise or heat does the quad-rank 3DS design add during all-day operation?

Load-reduced ECC LRDIMMs draw standard 1.2 V power and produce no extra fan noise; thermal output matches other DDR4 3200 server modules.

My motherboard needs 288-pin DDR4 ECC LRDIMM slots — what else must I already have?

A DDR4 server or workstation platform that supports 128 GB per slot, quad-rank 3DS/TSV organisation and registered ECC memory.

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