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
Four green DDR4 RDIMM sticks, no heat spreaders, 288-pin gold contacts

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 3200 PC4-25600 CL22 2Rx8 1.2V 288-Pin ECC RDIMM memory upgrade

SKU CH-PSH6-NN6F4

64 GB DDR4 ECC registered server kit with four 16 GB modules at 3200 MT/s CL22, 1.2 V, 288-pin RDIMM, validated for ASRock Rack ROMED8-2T EPYC motherboards

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 3200 (PC4 25600)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL22
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 64GB 4X16GB

Show 4 more
  • 64 GB total capacity from four 16 GB modules
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • ECC registered RDIMM design protects data integrity
  • CL22 latency at 1.2 V operating voltage
  • Validated for ASRock Rack ROMED8-2T EPYC motherboards

System-specific ECC RDIMM kit

This NEMIX RAM kit delivers 64 GB of DDR4 registered memory in four 16 GB modules. It is built for servers and workstations that require error-correcting code and registered signal integrity. The modules run at 3200 MT/s with a CAS latency of 22 at 1.2 V. They fit 288-pin DDR4 RDIMM slots in compatible ASRock Rack platforms.

Quad-module matched set

The package contains four identical 2Rx8 modules tested together for multi-channel stability. No heat spreaders are included, allowing dense DIMM spacing in 1U and 2U chassis. The kit eliminates the guesswork of mixing single sticks and ensures uniform timing across all populated channels. Each module uses major OEM DRAM from Samsung, Micron or Hynix.

EPYC motherboard validation

Compatibility is validated for the ASRock Rack ROMED8-2T motherboard with AMD EPYC processors. The registered ECC design meets the strict electrical requirements of that platform. Builders targeting other server boards or consumer desktop chipsets should verify qualified vendor lists before purchase.

How it compares

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

Price $509.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $7.97 per GB
Typical for this category: the median of 20,941 items is $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 3200 MHz ECC RDIMM Registered Server Memory
Part numberMR25600-628K4
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 3200 (PC4 25600)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL22
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items64 GB (4 × 16 GB) DDR4 3200 MHz PC4-25600 2Rx8 1.2 V CL22 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

Will the 2Rx8 registered modules need any firmware updates or re-seating to maintain stability over time?

No firmware updates are required for the DDR4 3200 modules; the 2Rx8 registered design handles signal integrity at the hardware level. Reseating is only necessary if the system is moved or the chassis is opened for other service.

What limit appears first when the 64 GB kit runs continuously at CL22 1.20 V on an EPYC platform?

The memory controller's maximum supported frequency and rank-per-channel rules are reached before the modules themselves hit a thermal or voltage ceiling.

How much noise and heat do the four bare registered DIMMs produce during all-day operation?

Without heat spreaders the modules run passively; they add no fan noise and only marginally increase case temperature at the rated 1.20 V.

More in Model-Specific Memory Upgrades

Similar items