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Green PCB DDR5 RDIMM module with black heatspreader and gold contacts

A-Tech

A-Tech 128GB DDR5 5600 ECC RDIMM CL40 1.10V 4Rx4 3DS server RAM

SKU CH-4NCR-MMWR0

128 GB DDR5 5600 registered ECC DIMM with 3DS stacking for high-density server memory expansion

  • Total capacity128 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity handles heavy server workloads
  • DDR5 5600 speed delivers high data throughput
  • ECC RDIMM design protects data integrity
  • 10 V operation matches DDR5 standard voltage
  • 288-pin DIMM form factor fits registered memory slots

128GB DDR5 5600 ECC RDIMM

This 128GB DDR5 5600 ECC registered DIMM is built for servers and workstations that require high-capacity memory with error correction. It operates at 1.10V with a CAS latency of 40 and uses a 4Rx4 3DS configuration. The module suits IT professionals upgrading compatible enterprise platforms.

Check DDR5 RDIMM slot support

Before ordering, confirm that your system accepts DDR5 registered DIMMs with a 288-pin form factor and supports 1.10V operation. Verify the motherboard or server documentation for maximum per-slot capacity and qualified vendor lists. The 4Rx4 organisation may require specific platform support for proper detection.

Sustained load stability

Under continuous workloads the registered buffer reduces electrical loading on the memory controller while ECC corrects single-bit errors in real time. The 1.10V standard voltage and CL40 timing maintain consistent throughput without relying on short-burst boost clocks. This combination helps preserve data integrity during extended compute tasks.

How it compares

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

Price $3,497.99
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 $27.33 per GB
Pricier than about 89% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Hynix
Model nameHMCT04AGERA202N
Total capacity128 GB
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4 EC8)
Power
Rated voltage1.1 V

Questions about this item

What comes in the box and do I need to buy anything else?

You receive one 128 GB DDR5 5600 ECC RDIMM module. No extra parts are included; the module installs directly into a compatible 288-pin DDR5 server DIMM slot.

Which version or capacity should I choose for my server?

This is a single 128 GB module built to the Hynix HMCT04AGERA202N specification. Select it when your system requires a 128 GB registered DDR5 5600 DIMM with 4Rx4 3DS organisation.

What does the 5600 CL40 rating mean once the module is installed?

The module runs at the DDR5 5600 data rate with CAS latency 40 at 1.10 V, providing registered ECC operation for error-corrected server workloads.

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