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Green circuit board with black memory chips, gold edge connector, no heat spreader

A-Tech

A-Tech 8GB DDR5 5600MHz CL40 1.10V Desktop RAM

SKU CH-GS8Y-DHR6B

8GB DDR5 desktop module running at 5600MHz CL40 1.10V, unbuffered non-ECC 288-pin DIMM built as a compatible replacement for Hynix HMCG66AGBUA, HMCG66AGBUA081N and HMCG66AGBUA084N

  • Total capacity8 GB
  • Rated speedDDR5 5600 (PC5 44800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL40
  • Tested speed5600
  • Rated voltage1.1 V
  • 8GB capacity lets you run more applications at once
  • DDR5 5600MHz speed moves data faster for responsive performance
  • CL40 latency keeps timing tight for stable operation
  • 10V voltage matches the DDR5 standard for efficient power use
  • 288-pin DIMM form factor fits standard desktop memory slots

8GB DDR5 5600MHz Desktop Memory

This 8GB DDR5 module runs at 5600MHz with a CL40 latency and operates at the standard 1.10V. It is an unbuffered, non-ECC DIMM built as a compatible replacement for Hynix HMCG66AGBUA, HMCG66AGBUA081N and HMCG66AGBUA084N part numbers.

Sustained Load Behaviour

The module maintains its rated 5600MHz frequency and 1.10V voltage during extended workloads without requiring a heat spreader. Quality assurance testing verifies stable operation under continuous memory-intensive tasks such as large dataset processing or prolonged multitasking sessions.

DDR5 Interface Limits

The DDR5 interface on this DIMM uses a 288-pin connector and is rated for PC5-44800 bandwidth. Maximum throughput is defined by the 5600MHz clock and CL40 timing, so workloads that exceed this bandwidth ceiling will encounter the inherent latency and transfer limits of the DDR5 5600 standard.

How it compares

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

Price $103.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 8 GB
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $13.00 per GB
Pricier than about 80% 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 nameHMCG66AGBUA, HMCG66AGBUA081N, HMCG66AGBUA084N
Total capacity8 GB
Performance
Rated speedDDR5 5600 (PC5 44800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL40
Tested speed5600
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Recommended forCompatible Replacement for Hynix HMCG66AGBUA, HMCG66AGBUA081N, HMCG66AGBUA084N

Questions about this item

How much heat and power does the 1.10V DDR5 5600MHz module draw when running continuously?

The module operates at the standard DDR5 voltage of 1.10V and has no heat spreader, so it relies on case airflow to stay cool during all-day workloads.

What must my desktop already have to accept this 288-pin DIMM?

A motherboard with a DDR5 288-pin DIMM slot that supports 5600MHz PC5-44800 unbuffered non-ECC memory.

Will this CL40 8GB stick work alongside my existing slower DDR5 modules?

Yes, the system will run all installed DDR5 at the speed and timings of the slowest module, so this 5600MHz CL40 kit will downclock to match older sticks.

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