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Green rectangular DDR5 DIMM with black chips and gold edge connector

A-Tech

A-Tech 16GB DDR5 4800 ECC RDIMM 1Rx8 CL40 server RAM

SKU CH-27JW-JVFNT

16 GB DDR5 4800 ECC RDIMM 1Rx8 CL40 registered server memory with 1.1 V operation

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 16GB DDR5 4800 ECC RDIMM expands server memory capacity
  • CL40 latency at 1.10V optimises registered signal timing
  • 1Rx8 EC8 organisation delivers single-rank error-correcting throughput
  • 288-pin DDR5 DIMM form factor fits standard server slots
  • Replaces Hynix HMCG78MEBRA series modules for validated compatibility

What this module provides

This is a 16GB DDR5 4800 ECC registered DIMM built as a compatible replacement for specific Hynix server modules. It targets administrators upgrading or repairing workstation and server platforms that require registered memory with error correction.

Compatibility checks before ordering

Verify that your motherboard accepts DDR5 registered DIMMs and supports ECC operation at 1.1V. Confirm the platform can use a 1Rx8 organisation and that the 288-pin form factor matches the memory slots in your chassis.

Build quality and daily implications

The module uses major-brand chips and undergoes quality-assurance testing for dependable server-grade reliability. The registered design adds a buffer that reduces electrical load on the memory controller, while the ECC function corrects single-bit errors to protect data integrity in continuous workloads.

How it compares

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

Price $460.99
Pricier than about 69% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $28.81 per GB
Pricier than about 90% 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 nameHMCG78MEBRA, HMCG78MEBRA103N, HMCG78MEBRA107N, HMCG78MEBRA110N, HMCG78MEBRA113N
Total capacity16 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8 (EC8)
Power
Rated voltage1.1 V

Questions about this item

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

The package includes a single 16 GB DDR5 4800 ECC RDIMM. No extra components or cables are required; the module plugs directly into a compatible 288-pin DDR5 server DIMM slot.

How do I choose between the listed Hynix part numbers HMCG78MEBRA103N, 107N, 110N and 113N?

All five Hynix part numbers are covered by this A-Tech replacement module. Select the one that matches the label on your existing stick or your system’s qualified-vendor list; the electrical specs are identical.

What does the 4800 MT/s rating mean once the DIMM is installed in a server?

The module runs at 4800 MT/s with CL40 latency at the standard 1.10 V DDR5 voltage, providing the rated PC5-38400 bandwidth when the platform’s memory controller is set to that speed.

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