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

A-Tech

A-Tech 16GB DDR5 4800 ECC RDIMM 1Rx8 for Hynix HMCA2GR8MJR8C-EB HMCG78MEBRA102N 105N 112N 116N server RAM

SKU CH-40JY-4WYNX

16 GB DDR5-4800 ECC registered DIMM with 1Rx8 layout for Hynix-compatible servers

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latency40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • ECC protection prevents data errors with registered DDR5 design
  • 4800 MHz speed handles heavy server workloads efficiently
  • 16 GB capacity expands system memory for demanding applications
  • 1 V operation reduces power consumption in data centres
  • Compatible replacement for Hynix HMCA2GR8MJR8C-EB and related part numbers

16GB DDR5 4800 ECC RDIMM

This 16GB DDR5 4800 ECC RDIMM module is built for server and workstation systems that require registered memory with error correction. It replaces specific Hynix part numbers including HMCA2GR8MJR8C-EB and the HMCG78MEBRA series. The module runs at 4800 MT/s with a CAS latency of 40 and operates at the standard 1.10 V.

Suited for registered DDR5 slots only

This module fits systems designed for 288-pin DDR5 RDIMMs with ECC support and a 1Rx8 rank structure. Builders using platforms that accept only unbuffered UDIMMs or that lack DDR5 registered memory support should look at other memory types. The single-rank x8 organisation suits configurations that populate multiple channels per controller.

Registered ECC with 1Rx8 organisation

The deciding specification is the combination of registered buffering, ECC capability and 1Rx8 rank layout on a 288-pin DDR5 form factor. Only motherboards and server boards qualified for DDR5 RDIMMs with this rank configuration will recognise and stabilise the module at 4800 MT/s.

How it compares

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

Price $475.99
Pricier than about 70% 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).
CAS latency 40
Typical for this category: the median of 439 items is 40.
Price per GB $29.75 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 HMCA2GR8MJR8C-EB HMCG78MEBRA102N HMCG78MEBRA105N HMCG78MEBRA112N HMCG78MEBRA116N
Model nameA-Tech 16 GB DDR5-4800 ECC RDIMM Server RAM Module
Total capacity16 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latency40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V

Questions about this item

Should I choose the 16GB DDR5 4800 module or a different capacity for my server?

This listing provides a single 16GB DDR5-4800 ECC RDIMM. Select this module when your system requires a 1Rx8 registered DIMM at 1.1V to match the Hynix part numbers listed.

What does the 4800MHz speed rating deliver in an actual server workload?

The module runs at DDR5-4800 (PC5-38400) with CL40 latency, providing the rated bandwidth and error-correction for registered server platforms that support this speed grade.

How does the 288-pin RDIMM interface limit memory configuration in practice?

The 288-pin registered DIMM fits DDR5 RDIMM slots only; the 1Rx8 organisation and ECC function require a server or workstation chipset that supports registered memory.

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