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Green PCB DDR5 UDIMM module with black memory chips and gold edge connectors

A-Tech

A-Tech 16GB DDR5 4800 ECC UDIMM 1Rx8 HMCG78MEBEA081N server RAM

SKU CH-Y58D-J7SCH

16 GB DDR5 ECC UDIMM at 4800 MT/s with CL40 latency for server workloads

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeUnbuffered
  • ECC protection safeguards data integrity in servers
  • 16 GB capacity expands memory for heavy workloads
  • DDR5 4800 MHz speed delivers high bandwidth
  • 1 V operation reduces power consumption
  • 288-pin UDIMM form factor fits compatible server boards

A-Tech 16GB DDR5 4800 ECC UDIMM

This 16GB DDR5 4800 ECC unbuffered DIMM provides error-correcting memory for server and workstation platforms that require data integrity. It operates at 4800MHz with a CL40 latency and runs at the standard 1.10V DDR5 voltage. The module uses a 1Rx8 organisation with EC4 chip configuration.

Suited for ECC UDIMM systems only

The module fits systems that specifically support DDR5 ECC unbuffered memory and accept a 288-pin DIMM form factor. It will not function in platforms that require registered DIMMs, non-ECC memory, or previous DDR generations. Buyers needing registered ECC or higher capacity kits should look elsewhere.

1Rx8 EC4 rank and chip layout

The single-rank 1Rx8 organisation with EC4 chips determines electrical loading and compatibility with the memory controller. This specific arrangement is required by the Hynix HMCG78MEBEA and HMCG78MEBEA081N part numbers this module replaces. Verify your system documentation for this exact rank and chip configuration before purchase.

How it compares

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

Price $359.99
Pricier than about 64% 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 $22.50 per GB
Pricier than about 83% 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 nameHMCG78MEBEA, HMCG78MEBEA081N
Total capacity16 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
ECC supportYes
Buffer typeUnbuffered
Memory rank1Rx8 (EC4)
Power
Rated voltage1.1 V

Questions about this item

How do I install this 288-pin DDR5 ECC UDIMM and which orientation step is commonly missed?

Align the single notch on the 288-pin module with the key in the DDR5 DIMM slot, press straight down until both retention clips click, and verify the notch is centred — reversing the module is the step most often missed.

What maintenance or replacement will this 1Rx8 ECC module need over its service life?

No scheduled maintenance is required; the module either passes POST or it fails, in which case the entire 16GB stick is replaced under the lifetime warranty.

What limit appears first when this CL40 1.10V DDR5 module runs sustained workloads?

The JEDEC-standard 1.10V operating voltage and CL40 latency set the thermal and timing envelope; sustained loads will hit the voltage-regulated power limit before any user-adjustable threshold.

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