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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 256GB 8x32GB 1Rx4 CL40 1.1V ASRock Rack SIENAD10HM3 memory upgrade

SKU CH-Y8CV-57X78

Eight 32 GB DDR5 4800 ECC registered DIMMs deliver 256 GB at CL40 and 1.1 V for the ASRock Rack SIENAD10HM3

  • Total capacity256 GB (8 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 8X32GB

Show 3 more
  • 256 GB total capacity from eight 32 GB modules for high-density server workloads
  • DDR5 4800 speed rated at PC5 38400 for fast data throughput
  • Registered ECC design with 1Rx4 organisation corrects single-bit errors and stabilises fully populated channels
  • 1 V operating voltage matches the motherboard's memory controller specification
  • 288 pin RDIMM form factor verified compatible with ASRock Rack SIENAD10HM3

256GB DDR5-4800 ECC RDIMM kit

This 256GB kit contains eight 32GB DDR5-4800 registered ECC modules rated at CL40 and 1.10V. It is built for the ASRock Rack SIENAD10HM3 motherboard and uses the 288-pin RDIMM form factor that board requires.

Servers needing maximum registered ECC capacity

Suits administrators populating every slot on a compatible ASRock Rack platform with matched 1Rx4 modules. Not for systems that accept only unbuffered UDIMMs, SODIMMs or non-ECC memory, or for boards limited to lower total capacities.

Full 256GB at rated DDR5-4800 speed

Eight ranks of 1Rx4 modules let the memory controller run all channels fully populated at 4800 MT/s with ECC protection active. Headroom ends when the platform's maximum supported capacity or population rules are reached.

How it compares

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

Price $7,024.99
Pricier than about 83% 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 $27.44 per GB
Pricier than about 76% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-314K8
Total capacity256 GB (8 × 32 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsASRock Rack
In the box
Included items256 GB 8 × 32 GB DDR5 4800 MHz PC5-38400 1Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Does the ASRock Rack SIENAD10HM3 motherboard need to support DDR5 4800 RDIMM modules for this kit to function?

Yes, the motherboard must accept DDR5 4800 Registered DIMMs at 1.1 V with CL40 timing; the kit is built to the exact rank, voltage and timing the board's memory controller expects.

Can I mix these 1Rx4 Registered ECC modules with unbuffered UDIMMs already installed in the server?

No, Registered RDIMMs and unbuffered UDIMMs cannot be mixed on the same platform; the memory controller requires one consistent module type across all populated slots.

How do I confirm the full 256 GB is recognised and running at DDR5 4800 after installation?

Check the BIOS memory summary or the OS memory report; both should show 256 GB total capacity, DDR5 4800 speed and ECC active on all eight slots.

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