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
Eight green 288-pin DDR4 RDIMM modules in a row

NEMIX RAM

NEMIX RAM MR21300-324K8 256GB (8x32GB) DDR4 2666 ECC RDIMM CL19 1.2V memory upgrade

SKU CH-BEPW-74H91

256GB kit of eight 32GB DDR4-2666 ECC registered DIMMs at CL19 1.2V for ASRock EPYC server boards

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL19
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 256GB 8X32GB

  • 256 GB total capacity across eight 32 GB modules
  • DDR4 2666 MT/s rated speed for server workloads
  • ECC registered RDIMM design protects data integrity
  • CL19 latency at 1.2 V operating voltage
  • Validated for ASRock Rack ROMED8-2T EPYC motherboards

256GB DDR4 ECC RDIMM Kit for ASRock EPYC Servers

This 256GB kit contains eight 32GB DDR4 2666 registered DIMMs built with ECC for data integrity. It is designed for ASRock Rack ROMED8-2T motherboards running AMD EPYC processors in server and workstation roles.

Sustained Load Behaviour

Modules are stress tested under load to maintain stability during continuous operation. The registered design and 1.2V operation help keep signal quality consistent across all eight slots during extended workloads.

2Rx4 Organisation Decides Fit

Each module uses a 2Rx4 rank configuration that must match the motherboard memory topology. Verify the platform supports this rank structure before purchase; systems requiring a different organisation will not accept the kit.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $1,627.99
Pricier than about 65% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (8 × 32 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $6.36 per GB
Cheaper than about 62% of the 20,941 comparable items (median $8.19 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 lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 2666 MHz ECC RDIMM Registered Server Memory
Part numberMR21300-324K8
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2666 (PC4 21300)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL19
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items256 GB (8 × 32 GB) DDR4 2666 MHz PC4-21300 2Rx4 1.2 V CL19 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

How much power does the 256GB DDR4 2666 kit draw when running continuously at 1.2V?

Each 32GB module operates at 1.20V, so the eight-module kit runs at standard DDR4 voltage with no extra power overhead.

What motherboard slot and CPU memory controller are required for these 288-pin ECC RDIMMs?

You need a DDR4 RDIMM-capable motherboard such as the ASRock Rack ROMED8-2T with an AMD EPYC processor that supports registered ECC memory.

Will the 2Rx4 registered modules work alongside older single-rank unbuffered DDR4 DIMMs?

No, registered 2Rx4 RDIMMs cannot be mixed with unbuffered UDIMMs; the memory controller requires all slots to use the same registered ECC type.

More in Model-Specific Memory Upgrades

Similar items