We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green 288-pin DDR4 LRDIMM module with black chips and silver label

A-Tech

A-Tech 64GB DDR4 2666 ECC LRDIMM 4Rx4 Hynix HMAA8GL7AMR4N-VK HMAA8GL7CPR4N-VK Server Memory

SKU CH-3F69-7HZD0

64GB DDR4 2666 ECC load-reduced DIMM with 4Rx4 organisation and CL19 latency for server workloads

  • Total capacity64 GB
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced
  • 64GB capacity lets servers handle larger workloads
  • DDR4 2666 speed with PC4-21300 bandwidth supports high-throughput tasks
  • ECC LRDIMM design with 4Rx4 ranks improves data integrity and signal loading
  • 2V operation matches DDR4 standard voltage for efficient power use
  • 288-pin DIMM form factor fits compatible server memory slots

64GB DDR4 2666 ECC LRDIMM Server Module

This 64GB DDR4 2666 ECC LRDIMM module is built for servers and workstations that require high-density registered memory with error correction. The load-reduced design lowers electrical load on the memory bus, allowing larger capacities per channel. It operates at 1.2V with a CAS latency of CL19.

Major-brand Hynix chips ensure validated

The module uses major-brand Hynix components that match the HMAA8GL7AMR4N-VK and HMAA8GL7CPR4N-VK part numbers. Each unit undergoes quality-assurance testing before shipment, reducing the risk of DOA sticks and ensuring reliable operation in qualified platforms.

288-pin DIMM form factor fits standard DDR4 server

The 288-pin DDR4 DIMM form factor installs directly into compatible server and workstation motherboards. Load-reduced buffering and 4Rx4 organisation mean the platform must explicitly support LRDIMM topology; systems limited to standard RDIMM or UDIMM will not accept this module.

How it compares

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

Price $222.99
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 $3.48 per GB
Cheaper than about 86% 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 capacity64 GB
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL19
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Power
Rated voltage1.2 V

Questions about this item

How often will the 64GB DDR4 2666 ECC LRDIMM 4Rx4 module need replacement?

The module uses Major Brand Chips tested to stringent standards and is backed by a Lifetime Warranty, so it is designed to last the life of the server without scheduled replacement.

What limits sustained throughput on the 288-pin DDR4 2666 CL19 LRDIMM?

Sustained throughput is capped by the DDR4 2666 MT/s data rate and CL19 latency; the 4Rx4 Load Reduced organisation maximises capacity per channel within that bandwidth ceiling.

How much heat and power does the 1.20V 64GB LRDIMM produce under all-day load?

Operating at the standard DDR4 1.20V, the module draws minimal power per gigabyte; the Load Reduced buffer reduces electrical loading on the memory bus, keeping thermals low during continuous operation.

More in ECC Server RAM

Similar items