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Green 288-pin DDR4 DIMM with black chips and silver heat spreader

A-Tech

A-Tech 64GB DDR4 2666 ECC RDIMM 2S2Rx4 Hynix HMAA8GR7A2R4N-VN Server Memory

SKU CH-5RRV-8PXA3

A 64 GB DDR4 2666 MHz registered ECC DIMM with CL19 latency and 1.2 V operation for server workloads

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • 64 GB capacity handles heavy server workloads
  • DDR4 2666 MHz speed delivers 21300 MT/s data rate
  • ECC registered design detects and corrects memory errors
  • CL19 latency at 1.2 V standard voltage
  • 288-pin DIMM form factor fits registered DDR4 slots

64 GB DDR4 2666 ECC RDIMM

This 64 GB DDR4 2666 MHz registered ECC DIMM targets servers and workstations that require error-correcting memory for data integrity. The module uses a 288-pin form factor and operates at the standard 1.2 V DDR4 voltage. It suits administrators upgrading compatible platforms with Hynix HMAA8GR7A2R4N-VN equivalents.

Capacity and headroom

A single 64 GB stick delivers substantial capacity for virtualisation, in-memory databases or large dataset processing. The dual-rank 2S2Rx4 organisation helps populate memory channels efficiently on supported motherboards. Workloads exceeding 64 GB per channel will require additional modules or higher-density DIMMs.

DDR4 2666 interface limits

The PC4-21300 rating caps peak bandwidth at the DDR4 2666 MT/s data rate with CL19 latency. Systems that only support lower DDR4 speeds will downclock the module automatically. Platforms needing faster transfer rates or newer memory generations cannot use this DIMM beyond its specified standard.

How it compares

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

Price $212.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 64 GB
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $3.33 per GB
Cheaper than about 87% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity64 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Memory rank2S2Rx4 (4Rx4)
Power
Rated voltage1.2 V

Questions about this item

Will this DDR4 2666 CL19 RDIMM run reliably in a server that already uses 1.2 V registered modules?

Yes, the module operates at 1.2 V and uses registered ECC DDR4 2666 CL19 timing, matching the electrical and signalling requirements of existing 1.2 V RDIMM populations.

How can I confirm the module is recognised at 2666 MT/s with ECC active after installation?

Check the BIOS memory information or OS tools such as dmidecode or CPU-Z; they should report 64 GB, DDR4 2666 (PC4 21300), CL19, registered ECC and 1.2 V operation.

Does the package contain only the 288 pin DIMM or are any cables or brackets included?

The box contains the single 64 GB 288 pin DDR4 RDIMM; no cables, brackets or additional hardware are supplied.

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