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Four green DDR4 RDIMM modules, no heat spreaders, 288-pin gold contacts, 64GB kit

NEMIX RAM

NEMIX RAM 64GB (4x16GB) DDR4 2400 CL17 ECC RDIMM memory upgrade

SKU CH-749R-KN1ED

A 64 GB kit of four 16 GB DDR4-2400 CL17 ECC registered DIMMs at 1.2 V for compatible ASRock EPYC server boards

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL17
  • Buffer typeRegistered
  • Rated voltage1.2 V

Capacity 64GB 4X16GB

  • ECC protection prevents data errors in critical workloads
  • Registered design supports higher densities for 64 GB capacity
  • CL17 latency at 2400 MT/s delivers responsive server performance
  • 2 V operation reduces power draw across four modules
  • 288-pin RDIMM form factor fits ASRock EPYC motherboards

Capacity and configuration

This kit delivers 64GB of DDR4 memory across four 16GB modules running at 2400MHz with CL17 latency. Registered ECC design and 1.2V operation target server and workstation workloads that demand data integrity and sustained throughput.

Suited for registered ECC platforms.

The modules are built for systems that accept 288-pin DDR4 RDIMMs with registered buffers and error-correcting code. Desktop or laptop motherboards that require unbuffered non-ECC DIMMs cannot use this memory, and platforms limited to lower densities or different pinouts will not be compatible.

Fits validated ASRock Rack EPYC motherboards

Designed for the ASRock Rack ROMED8-2T and similar EPYC-series server boards, the kit occupies four DIMM slots and leaves remaining channels free for further expansion. Registered signalling reduces electrical load on the memory controller, supporting stable operation in high-density configurations.

How it compares

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

Price $312.99
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 $4.89 per GB
Cheaper than about 78% 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 numberMR19200-628K4
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 RDIMM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL17
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 2400 MHz PC4-19200 2Rx8 1.2 V CL17 288-PIN ECC RDIMM Registered Server Memory KIT

Other versions of this model

5 more in the same range

Questions about this item

Does my ASRock Rack ROMED8-2T motherboard need to support DDR4 2400 registered ECC RDIMMs for this kit to work?

Yes, the ROMED8-2T must accept DDR4 2400 PC4-19200 2Rx8 1.2 V CL17 registered ECC RDIMMs; this kit is validated for that exact specification.

Can I mix these 16 GB 2Rx8 modules with existing 8 GB 1Rx8 DDR4 2666 RDIMMs on the same EPYC platform?

Mixing ranks and speeds is not recommended; the memory controller will down-clock all DIMMs to the lowest common speed and may require specific population rules — consult the motherboard manual for supported mixed-rank configurations.

How can I verify the kit is running at 2400 MT/s with CL17 and ECC active after installation?

Enter the BIOS or use a tool such as dmidecode or CPU-Z; confirm each DIMM shows 2400 MT/s, CAS latency 17, 1.20 V, registered ECC type, and that total capacity reads 64 GB across all four slots.

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