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
Twelve green 64 GB DDR4 LRDIMM modules in a row

NEMIX RAM

NEMIX RAM 768GB (12x64GB) DDR4 2666 PC4-21300 CL19 1.20V 288-Pin ECC LRDIMM 4Rx4 Server Memory Kit

SKU CH-A5NH-ZQ6G7

A 768GB DDR4 server memory kit containing twelve 64GB ECC LRDIMM modules running at 2666MHz with CL19 latency

  • Total capacity768 GB (12 × 64 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Rated voltage1.2 V
  • Buffer typeLoad Reduced

Capacity 768GB (12 x 64GB)

  • 768GB total capacity supports massive virtualisation workloads
  • 12 modules of 64GB each fill high-density server slots
  • DDR4 2666 speed delivers 21300 MT/s bandwidth
  • CL19 latency at 1.20V balances throughput and efficiency
  • ECC Load Reduced 4Rx4 design protects data integrity

768GB DDR4 ECC LRDIMM Kit

This kit provides 768GB of DDR4 ECC LRDIMM memory across twelve 64GB modules. It runs at 2666 MT/s with CL19 latency and 1.20V voltage. The load-reduced design targets servers and workstations that require high-density registered memory with error correction.

Upgrading from lower-capacity RDIMM sets

Replacing smaller RDIMM kits with this 4Rx4 LRDIMM kit increases total capacity while reducing electrical load on the memory controller. The jump is worth it when the platform supports LRDIMM and the workload demands more than standard registered modules can deliver.

Twelve-module population requires full slot count

Installing all twelve modules fills every slot on compatible boards, so the CPU and chipset must support the full population at 2666 MT/s. Mixing with other ranks or speeds usually prevents boot, and the lack of heat spreaders means airflow across the DIMMs must be adequate.

How it compares

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

Price $2,852.99
Pricier than about 90% of the 6,523 comparable items (median $188.99).
Total capacity 768 GB (12 × 64 GB)
Higher than about 92% of the 6,064 comparable items (median 32 GB).
Price per GB $3.71 per GB
Cheaper than about 84% 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 nameNEMIX RAM
Product lineNEMIX RAM Original Series Memory
Model nameDDR4 ECC LRDIMM Load Reduced Memory
Part numberML21300-944K12
Total capacity768 GB (12 × 64 GB)
Product type288-Pin DDR4 LRDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeLoad Reduced
Memory rank4Rx4
Heat spreaderNo
Power
Rated voltage1.2 V

Other versions of this model

5 more in the same range

Questions about this item

Does this 288-pin DDR4 LRDIMM kit need a server motherboard with LRDIMM slots?

Yes, the kit uses 288-pin DDR4 LRDIMM modules that require a server motherboard with LRDIMM-compatible memory slots.

What is the correct population order for the twelve 4Rx4 modules?

Install the twelve 64GB 4Rx4 modules following the motherboard manual’s LRDIMM population sequence; skipping the prescribed slot order is the most common mistake.

Will the 1.20V operating voltage change over the kit’s lifespan?

The modules run at 1.20V from the factory; no voltage adjustment or periodic replacement is required under normal server operation.

More in ECC Server RAM

Similar items