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Green printed circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 16GB DDR5 4800MHz CL40 Desktop RAM

SKU CH-H9YY-NK75S

16GB DDR5 4800MHz CL40 desktop DIMM module for Hynix HMCG78AEBUA and HMCG78MEBUA replacements

  • Total capacity16 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Tested speed4800
  • Rated voltage1.1 V
  • 16 GB DDR5 module expands multitasking headroom
  • 4800 MHz tested frequency accelerates data throughput
  • CL40 latency keeps response tight
  • 10 V standard voltage reduces power draw
  • 288-pin DIMM fits desktop DDR5 slots

A-Tech 16GB DDR5 4800MHz Desktop Module

This A-Tech module delivers 16GB of DDR5 memory at 4800MHz with CL40 latency. It operates at the standard 1.10V for DDR5 and uses an unbuffered, non-ECC design. The 288-pin DIMM fits standard desktop slots.

Suits Hynix replacement; not for ECC systems

This module is a compatible replacement for Hynix HMCG78AEBUA and HMCG78MEBUA part numbers. It suits owners of those specific modules needing a direct swap. Systems requiring ECC or registered memory should look at a different part.

16GB capacity decides fit

The single specification that determines compatibility is the 16GB density in a single rank x8 organisation. Verify your board supports this exact capacity per slot before purchase.

How it compares

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

Price $177.99
Pricier than about 65% of the 3,647 comparable items (median $90.99).
Total capacity 16 GB
Typical for this category: the median of 3,251 items is 16 GB.
Price per GB $11.12 per GB
Pricier than about 71% of the 3,251 comparable items (median $6.75 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for Hynix
Model nameHMCG78AEBUA, HMCG78MEBUA
Total capacity16 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
Tested speed4800
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Recommended forCompatible Replacement for Hynix HMCG78AEBUA, HMCG78MEBUA

Questions about this item

Will this DDR5 module physically fit my desktop motherboard?

The module uses the standard 288-pin DDR5 DIMM form factor used by current desktop motherboards with DDR5 slots.

My board lists DDR5 4800 PC5-38400 as the maximum supported speed — will this kit run at that speed?

Yes, the module is rated at 4800 MT/s with CL40 latency at 1.1 V, matching the PC5-38400 specification.

Does this replacement cover both Hynix part numbers HMCG78AEBUA and HMCG78MEBUA?

The module is tested as a compatible equivalent for both Hynix part numbers listed.

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