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Green DDR5 ECC RDIMM module, 288 pins, black chips, silver contacts

A-Tech

A-Tech 64GB DDR5 5600 ECC RDIMM 2Rx4 HMCG94AGBRA181N

SKU CH-EQRT-86PVX

64GB DDR5 5600 ECC registered server memory module with CL40 latency and 1.1V operation

  • Total capacity64 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB capacity handles heavy server workloads
  • DDR5 5600 speed delivers high bandwidth for data-intensive tasks
  • ECC RDIMM registered design corrects errors to protect data integrity
  • CL40 latency at 1.1 V balances responsiveness with power efficiency
  • 2Rx4 EC8 organisation maximises density on a 288-pin module

Server-grade capacity for heavy workloads

This 64GB DDR5 module targets servers and workstations that need large memory pools for virtualization, databases or compute clusters. The registered design with ECC protects data integrity in always-on environments. It replaces Hynix HMCG94AGBRA and HMCG94AGBRA181N part numbers. Systems requiring lower capacities or unbuffered memory should look elsewhere.

Sustained throughput at standard voltage

Rated at 5600 MT/s with CL40 latency, the module runs at 1.10V under continuous load. The 2Rx4 organisation and registered buffer help maintain signal quality across full DIMM populations. Error-correcting code detects and corrects single-bit errors without halting the workload. Builds needing higher frequencies or lower latencies are not addressed by this specification.

288-pin registered DIMM with major-brand chips

The 288-pin form factor fits standard DDR5 RDIMM slots in compatible server boards. Major-brand chipset components are used throughout. A-Tech validates each unit through quality-assurance testing before shipment. Lifetime warranty and US-based technical support are included. Buyers whose platforms demand unbuffered UDIMMs or a different pin count cannot use this module.

How it compares

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

Price $1,625.99
Pricier than about 84% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $25.41 per GB
Pricier than about 87% 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 nameHMCG94AGBRA, HMCG94AGBRA181N
Total capacity64 GB
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4 (EC8)
Power
Rated voltage1.1 V

Questions about this item

How much heat does the 1.10 V DDR5 5600 module produce under continuous server load?

At the standard 1.10 V DDR5 voltage the module runs at the JEDEC-defined power envelope for 5600 MT/s registered DIMMs, so thermal output matches other 64 GB RDIMMs at this speed.

What motherboard feature is required for this 288-pin registered ECC DIMM to function?

The board must provide a DDR5 RDIMM slot with registered ECC support; standard consumer DDR5 slots that accept only unbuffered non-ECC modules will not work.

Will this 2Rx4 EC8 module run at 5600 MT/s in a system that currently uses DDR5 4800 RDIMMs?

Yes — the memory controller will negotiate the highest common speed, so the new module will operate at 4800 MT/s alongside the existing DIMMs.

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