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Four green DDR5 RDIMM modules without heat spreaders in a 256GB kit

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 256GB 4×64GB CL40 1.1V Supermicro H14SHM memory upgrade

SKU CH-7Y0P-QW8DX

256 GB kit of four 64 GB DDR5-4800 ECC registered RDIMMs at CL40 and 1.1 V, validated for Supermicro H14SHM servers

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

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  • 256 GB total capacity from four 64 GB modules for dense server workloads
  • DDR5-4800 speed with CL40 latency matches the board's rated timing
  • Registered ECC design corrects single-bit errors and stabilises fully populated slots
  • 10 V operation reduces power draw across all 256 GB
  • 288-pin RDIMM form factor fits the Supermicro H14SHM motherboard exactly

Supermicro H14SHM DDR5 upgrade

This 256GB kit delivers 4×64GB DDR5-4800 Registered ECC RDIMMs built to the exact rank, voltage and timing the Supermicro H14SHM memory controller expects. It targets administrators who need full-capacity population across all supported slots without manual tuning.

Thermals noise and power at 1.1V

Operating at 1.1V, the modules draw minimal power per DIMM and run without heat spreaders, relying on server chassis airflow for cooling. Registered buffering reduces electrical load on the memory controller, helping keep system power draw predictable under sustained workloads.

What the kit changes for your server

The 2Rx4 Registered ECC design enables every slot to run fully populated at rated speed while correcting single-bit errors before they cause data corruption or reboots. Compatibility is limited to systems that accept 288-pin DDR5 RDIMMs and follow the H14SHM population rules; it will not work in UDIMM or SODIMM platforms.

How it compares

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

Price $6,192.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $24.19 per GB
Pricier than about 69% 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 numberMR38400-924K4
Total capacity256 GB (4 × 64 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 rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 4 × 64 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

How do I install the four 64GB DDR5 RDIMMs in the Supermicro H14SHM and which slot order do people get wrong?

Follow the motherboard manual for the exact DIMM population sequence; the board requires registered 288-pin DDR5 modules and will not accept UDIMM or SODIMM, so populate the approved slots in the order specified to reach the full 256GB capacity.

What maintenance or replacement will this ECC RDIMM kit need over its service life?

The modules have no heat spreaders and no moving parts, so no routine maintenance is required; if a single-bit error exceeds ECC correction, the affected 64GB DIMM would be replaced under the lifetime replacement warranty.

What limit appears first when the kit runs at full load continuously?

The registered DDR5-4800 CL40 1.1V specification defines the sustained operating envelope; the memory controller and platform thermal limits will be reached before the modules exceed their rated speed, latency or voltage.

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