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Two green circuit boards with black chips and gold contacts, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 4800 ECC Registered RDIMM 64GB 2x32GB CL40 1.1V 1Rx4 ASRock Rack SIENAD10HM3 memory upgrade

SKU CH-A0P8-A0DD3

64 GB DDR5 4800 registered ECC RDIMM kit (2 × 32 GB, CL40, 1.1 V, 1Rx4) validated for ASRock Rack SIENAD10HM3

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 64GB 2X32GB

Show 3 more
  • 64 GB kit delivers full-rated DDR5 4800 speed
  • Registered ECC design prevents silent data corruption
  • 1Rx4 layout matches motherboard population rules
  • 1 V operation keeps power draw low
  • Lifetime warranty with US-based technical support

Server-grade DDR5 ECC RDIMM kit

This 64GB kit comprises two 32GB DDR5-4800 Registered ECC modules built to the PC5-38400 standard. Each stick runs at 1.1V with CL40 latency and a 1Rx4 organisation, delivering the exact electrical profile the ASRock Rack SIENAD10HM3 motherboard expects. The registered architecture buffers address and command signals so every slot can be populated without stressing the memory controller.

Verified fit for ASRock Rack SIENAD10HM3

The 288-pin RDIMM form factor matches the board's physical and electrical requirements, avoiding the incompatibility of unbuffered UDIMM or SODIMM alternatives. Population rules for this platform are strict; the kit is validated against the vendor's qualified-vendor list so the system recognises the full capacity at rated speed on first boot. Buyers whose servers demand a different DIMM type or voltage should look elsewhere.

64GB registered ECC capacity with DDR5-4800 headroom

Two ranks per channel provide ample space for virtualisation hosts, database buffers and large-scale container workloads while ECC corrects single-bit errors before they corrupt data. The DDR5-4800 data rate sustains high-throughput memory-bound tasks, yet the fixed CL40 timing and 1.1V operation set a ceiling for latency-sensitive codes that would benefit from lower-latency or higher-frequency modules not supported by this platform.

How it compares

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

Price $1,746.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.30 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 numberMR38400-314K2
Total capacity64 GB (2 × 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 items64 GB 2 × 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

Will the 288-pin RDIMM modules fit the ASRock Rack SIENAD10HM3 motherboard DIMM slots?

Yes, the kit uses the 288-pin DDR5 RDIMM form factor required by the ASRock Rack SIENAD10HM3 motherboard.

What is the correct population order when installing both 32 GB modules on this board?

Follow the motherboard manual for the approved DIMM population sequence; the kit is spec-matched to the board's memory-population rules.

Do these registered ECC modules require any periodic maintenance or scheduled replacement?

No periodic maintenance is needed; the lifetime replacement warranty covers the modules for as long as they remain in service.

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