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Two green DDR4 RDIMM sticks, black chips, no heat spreader

NEMIX RAM

NEMIX RAM 128GB (2x64GB) DDR4 2933 ECC RDIMM CL21 memory upgrade

SKU CH-X6B9-M5D7E

A 128 GB dual-channel kit of registered ECC DDR4-2933 RDIMMs built for ASRock Rack ROMED8-2T EPYC servers

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR4 2933 (PC4 23400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL21
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 128GB 2X64GB

  • 128 GB total capacity with two 64 GB modules
  • DDR4 2933 speed rated at PC4-23400 bandwidth
  • ECC registered design protects data integrity in servers
  • CL21 latency at 1.2 V for efficient operation
  • 288-pin RDIMM form factor fits compatible ASRock EPYC boards

128GB DDR4 ECC RDIMM kit

This 128GB kit contains two 64GB DDR4 2933 ECC registered DIMMs built for ASRock Rack ROMED8-2T motherboards with AMD EPYC processors. The modules run at 1.20V with CL21 latency and use a 2Rx4 organisation across 288 pins. They are designed for server and workstation workloads that require registered memory with error correction.

Server builders needing registered ECC memory

The kit fits administrators upgrading compatible ASRock Rack platforms where registered DDR4 ECC RDIMMs are required. It is not suitable for systems that accept only unbuffered UDIMMs or that cannot address 64GB per slot. Builders needing higher frequencies or lower latencies than 2933 CL21 should look at other specifications.

2Rx4 64GB per module density

Each DIMM delivers 64GB in a dual-rank 2Rx4 layout, so the two-module kit reaches 128GB total capacity. This density decides whether the kit matches the maximum supported memory per slot and the total memory target for the target platform.

How it compares

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

Price $811.99
Pricier than about 58% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $6.34 per GB
Cheaper than about 62% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineASRock Server Motherboard Compatible Series Memory
Model nameASRock DDR4 2933 MHz ECC RDIMM Registered Server Memory
Part numberMR23400-924K2
Total capacity128 GB (2 × 64 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2933 (PC4 23400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL21
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Memory rank2Rx4
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock
In the box
Included items128 GB (2 × 64 GB) DDR4 2933 MHz PC4-23400 2Rx4 1.2 V CL21 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

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Questions about this item

Does the 288-pin DDR4 RDIMM fit the ASRock Rack ROMED8-2T motherboard?

Yes, the 288-pin DDR4 RDIMM modules are designed for the ASRock Rack ROMED8-2T motherboard supporting AMD EPYC processors.

How do I install the 2Rx4 registered DIMMs and what step is often missed?

Insert each 64GB module firmly until the retention clips click; the step often missed is populating the correct memory channels per the motherboard manual for 2Rx4 registered DIMMs.

Will the Samsung, Micron or Hynix chips on these ECC RDIMMs need replacement under normal server loads?

The ECC registered modules use major OEM chips stress-tested for reliability and are not expected to need replacement during typical server operation.

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