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Green printed circuit board with black memory chips on both sides, gold edge connector, no heat spreader

A-Tech

A-Tech 64GB DDR5 4800 ECC RDIMM 2Rx4 EC8 Hynix HMCG94MEBRA127N Server RAM

SKU CH-65BG-C1G3Y

A 64 GB DDR5 registered ECC module running at 4800 MHz with a CAS latency of 40, built for server workloads

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 64 GB capacity supports heavy server workloads
  • DDR5 4800 MHz speed enables fast data throughput
  • ECC RDIMM design detects and corrects memory errors
  • 2Rx4 rank organisation maximises density per module
  • 10 V operation matches DDR5 standard voltage

64GB DDR5 4800 ECC RDIMM for Servers

This 64GB DDR5 4800 ECC RDIMM module is built for server and workstation platforms that require registered memory with error correction. It uses a 2Rx4 organisation and operates at the standard 1.10V DDR5 voltage. The module is a compatible replacement for Hynix HMCG94MEBRA127N and related part numbers.

Thermals and Power at Standard Speed

Running at 4800 MT/s with CAS latency 40, the module draws 1.10V and has no heat spreader, relying on system airflow for cooling. Registered buffering reduces electrical load on the memory controller, which helps keep power draw predictable during normal multi-tasking workloads.

Behaviour Under Sustained Load

Under continuous heavy workloads the registered design and on-die ECC maintain data integrity without adding latency beyond the rated CAS 40 timing. The major-brand DRAM ICs are tested for stability at the full 4800 MT/s rate, so performance remains consistent during extended compute or virtualisation tasks.

How it compares

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

Price $1,599.99
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).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $25.00 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 lineCompatible Replacement for Hynix HMCG94MEBRA127N HMCA8GR8MJR4C-EB HMCG94MEBRA124N HMCG94MEBRX020
Model nameA-Tech 64 GB DDR5-4800 ECC RDIMM Server RAM Module
Total capacity64 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

How do I install this 288-Pin DDR5 RDIMM and what step is often missed?

Align the notch on the module with the slot key, press firmly until both retention clips click, and verify the motherboard sees the full 64 GB at 4800 MHz in BIOS.

What maintenance or replacement will this ECC RDIMM need over time?

No scheduled maintenance is required; the module is tested for lifetime reliability and should only be replaced if memory diagnostics report correctable or uncorrectable errors.

What limit appears first when this 1.10 V 2Rx4 module runs sustained workloads?

The CAS latency of 40 and the 4800 MT/s data rate set the throughput ceiling before voltage or thermal limits are reached.

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