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Four bare green DDR5 DIMM modules with black chips, no heat spreaders

A-Tech

A-Tech 128GB (4x32GB) DDR5-5600 ECC UDIMM 2Rx8 Server RAM Kit

SKU CH-PWWA-HRG09

128 GB quad-channel DDR5 ECC UDIMM kit running at 5600 MT/s with 1.1 V, CL40 and dual-rank x8 modules

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor Brand Chipset
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeUnbuffered

Capacity 128GB (4 x 32GB)

  • 128 GB total capacity across four 32 GB modules
  • DDR5-5600 speed rated at PC5-44800 for high bandwidth
  • ECC unbuffered design detects and corrects single-bit errors
  • Dual-rank 2Rx8 organisation increases memory density per channel
  • Standard 1.1 V DDR5 voltage reduces power draw

128GB DDR5 ECC UDIMM Kit

This 128GB kit contains four 32GB DDR5-5600 ECC UDIMM modules built for servers and workstations that require error-correcting unbuffered memory. It suits administrators expanding memory capacity on platforms validated for 288-pin PC5-44800 EC4 DIMMs at 1.10V.

Sustained Load Behaviour

Dual-rank 2Rx8 organisation and CAS 40 timings allow each module to maintain throughput during extended compute or virtualization tasks without the buffering latency of registered DIMMs. ECC correction operates continuously to preserve data integrity under heavy multi-threaded workloads.

DDR5 Interface Limits

The PC5-44800 standard caps transfer rate at 5600 MT/s and mandates 1.1V operation, so this kit cannot exceed those speeds or voltages on any platform. Compatibility is restricted to systems explicitly qualified for DDR5 ECC UDIMM; desktop and laptop boards that lack EC4 support will not accept these modules.

How it compares

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

Price $2,633.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 90% of the 6,064 comparable items (median 32 GB).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $20.58 per GB
Pricier than about 81% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR5 Server Memory RAM
Model nameA-Tech 128 GB (4 × 32 GB) DDR5-5600 ECC UDIMM Server RAM Kit
Part numberAT32G4D5D5600UD8EC4N11 V
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR5 SDRAM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency40
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Kit configurationQuad Channel Kit
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

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Questions about this item

How much power does the 1.10V DDR5-5600 kit draw under sustained server workloads?

The modules run at the standard DDR5 voltage of 1.10V. Actual power draw depends on the server platform and workload intensity, so consult your system documentation for precise figures.

What motherboard features are required to run this 288-pin ECC UDIMM kit?

You need a server or workstation board with DDR5 slots that support ECC unbuffered DIMMs and quad-channel operation. Desktop and laptop platforms are not compatible.

Will the dual-rank 2Rx8 organisation work alongside older single-rank DDR5 modules I already own?

Mixing ranks is possible only if the platform's memory controller and BIOS explicitly support mixed-rank populations. Check the system manual for approved configurations before combining modules.

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