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Green rectangular DDR5 memory module with gold contacts and black chips, no heat spreader

A-Tech

A-Tech 128GB DDR5 5600 EC8 RDIMM 2S2Rx4 3DS Server RAM

SKU CH-22HH-9C1D7

128 GB DDR5 server module at 5600 MHz with ECC registered, quad-rank 3DS and CL46 latency

  • Total capacity128 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL46
  • Rated voltage1.1 V
  • Buffer typeRegistered

Capacity 128GB

  • 128 GB capacity expands server memory headroom for heavy workloads
  • DDR5 5600 speed delivers 44800 MT/s data rates for faster throughput
  • EC8 registered ECC corrects multi-bit errors to protect data integrity
  • 2S2Rx4 quad-rank 3DS architecture packs density into a single 288-pin module
  • 1 V DDR5 standard voltage reduces power draw per gigabyte

128GB DDR5 5600 EC8 RDIMM

This 128GB DDR5 5600 EC8 RDIMM module delivers 128GB capacity at 5600 MHz with CL46 latency. It operates at 1.1V using 288-pin DDR5 SDRAM technology. ECC registered design with 2S2Rx4 quad-rank 3DS/TSV organisation targets server and workstation platforms requiring high-density error-correcting memory.

Suitable systems and limits

Suits DDR5 servers and workstations that accept 128GB EC8 registered DIMMs with 2S2Rx4 rank structure. Not for desktop or laptop computers, which cannot use registered ECC modules. Builders needing non-ECC unbuffered memory or lower-capacity sticks should look elsewhere. Verify platform qualified-vendor lists before purchasing.

Deciding specification: 2S2Rx4 3DS/TSV rank

The 2S2Rx4 (4Rx4) 3DS/TSV rank configuration is the single specification that determines compatibility. Only systems qualified for this exact quad-rank x4 3DS organisation will recognise the full 128GB capacity. Match this rank string against your motherboard or OEM memory-support list to confirm fit.

How it compares

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

Price $3,242.99
Pricier than about 90% 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 $25.34 per GB
Pricier than about 86% 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 2S2Rx4 PC5-5600B-R EC8
Part numberAT128G1D5D5600RQ4EC8N11 V
Total capacity128 GB
Product type288-Pin DDR5 SDRAM
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL46
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 3DS/TSV)
Kit configurationSingle Module
Heat spreaderNo
Power
Rated voltage1.1 V

Other versions of this model

5 more in the same range

Questions about this item

Can I add this 128GB DDR5 5600 EC8 RDIMM to a server that already has DDR5 4800 registered modules installed?

The module runs at DDR5 5600 with CL46 latency and 1.10V; mixing speeds will force all channels to the slowest module's rate and may require manual BIOS configuration for stability.

How can I verify the 2S2Rx4 quad-rank 3DS module is recognised correctly after installation?

Check the system BIOS or UEFI memory information screen — it should report a single 128GB DDR5 5600 registered ECC DIMM with 4Rx4 organisation and EC8 error-correction active.

Does the package contain only the 288-pin RDIMM or are heat spreaders and cables included?

The box contains the single 128GB DDR5 5600 EC8 RDIMM module only; no heat spreader, cables or additional accessories are supplied.

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