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Green rectangular DDR4 DIMM with black chips and gold contacts

A-Tech

A-Tech 8GB DDR4 2666 ECC RDIMM 1Rx8 CL19 1.2V Server RAM

SKU CH-WHF8-WY8YJ

8GB DDR4 2666 ECC registered DIMM with CL19 latency and 1.2V operation for server workloads

  • Total capacity8 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 8GB capacity expands server memory for heavier workloads
  • DDR4 2666 MHz speed accelerates data throughput for responsive performance
  • ECC registered design detects and corrects single-bit errors automatically
  • CL19 latency at 1.2V balances timing efficiency with standard power draw
  • 288-pin RDIMM form factor fits compatible server and workstation slots

8GB DDR4 2666 ECC RDIMM

This 8GB DDR4 2666 ECC RDIMM module delivers registered, error-correcting memory for server and workstation platforms. The single-rank 1Rx8 organisation operates at 1.2V with CL19 timing. It targets administrators who need reliable capacity expansion in 288-pin DIMM slots.

Direct replacement for Hynix HMA81GR7AFR8N-VK

The module matches the Hynix HMA81GR7AFR8N-VK, HMA81GR7CJR8N-VK and HMA81GR7JJR8N-VK part numbers spec-for-spec. The jump is worth it when existing sticks show correctable errors or when workload growth exceeds current capacity. Builders who need higher density per slot or faster speeds should look elsewhere.

Simple DIMM insertion with standard keying

Installation follows normal 288-pin DDR4 DIMM procedure; the registered buffer requires a compatible chipset. What usually goes wrong is mixing registered and unbuffered modules or populating slots in an order the motherboard manual does not support. Verify the platform qualification list before seating the module.

How it compares

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

Price $53.99
Cheaper than about 83% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $6.75 per GB
Cheaper than about 56% of the 6,064 comparable items (median $7.25 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
Total capacity8 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Power
Rated voltage1.2 V

Questions about this item

Will this 288-pin DDR4 RDIMM fit my server's memory slots?

The module uses the standard DDR4 DIMM form factor with 288 pins and registered ECC signalling, matching server boards that accept RDIMMs.

What is the correct way to seat this registered ECC module so the system recognises it?

Align the notch with the slot key, press firmly until both retention clips click, and populate slots in the order your motherboard manual specifies for registered memory.

How do I know when this 1Rx8 ECC RDIMM should be replaced?

ECC corrects single-bit errors silently; if your server logs start reporting uncorrectable errors or the module fails POST, replace it.

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