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Two green DDR5 RDIMM sticks with black chips and gold contacts, no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 ECC RDIMM Supermicro H14SHM memory upgrade

SKU CH-NXP1-BVNF8

256 GB DDR5-4800 ECC registered RDIMM kit built to the exact rank, voltage and timing the Supermicro H14SHM memory controller expects

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 2X128GB

Show 24 more
  • 256 GB kit fills two slots with 128 GB modules
  • DDR5-4800 speed matches the board's rated memory bus
  • Registered ECC design corrects single-bit errors automatically
  • 1 V operation keeps power draw low per module
  • 288-pin RDIMM form factor fits the Supermicro H14SHM motherboard

Supermicro H14SHM DDR5 ECC kit

This 256 GB kit contains two 128 GB DDR5 4800 Registered ECC RDIMMs built for the Supermicro H14SHM motherboard. The modules run at 1.10 V with CL40 timing and a 2Rx4 rank structure that matches the board's memory controller requirements. Registered buffering allows full-slot population while ECC corrects single-bit errors to protect data integrity in production workloads.

Who should use this and who should not

Server administrators upgrading a Supermicro H14SHM system to its maximum supported capacity with validated DDR5 Registered ECC modules. Builders needing UDIMM, SODIMM or non-ECC memory for workstations or consumer platforms cannot use this kit. Systems limited to lower densities or different DDR generations will not accept these DIMMs.

The specification that decides fit

The motherboard must support 288-pin DDR5 Registered ECC RDIMMs at 4800 MT/s with 2Rx4 organisation and 1.10 V operation. Verify the H14SHM manual for approved population order and maximum capacity per channel before ordering.

How it compares

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

Price $8,095.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $31.62 per GB
Pricier than about 90% 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 numberMR38400-724K2
Total capacity256 GB (2 × 128 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 2 × 128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Does my Supermicro H14SHM motherboard need DDR5 4800 RDIMM slots to accept this 256GB kit?

Yes, the kit uses 288-pin DDR5 RDIMM modules that match the H14SHM's registered memory slots exactly.

Can I mix these 2Rx4 registered ECC modules with older UDIMM or LRDIMM sticks I already have?

No, registered RDIMMs cannot share a channel with unbuffered UDIMMs or load-reduced LRDIMMs; the board requires a uniform registered population.

How do I confirm the system sees both 128GB modules at 4800 MT/s with ECC active?

Check the BIOS memory info or run dmidecode to verify 256GB total, DDR5-4800 speed, CL40 timing, and ECC enabled on each DIMM.

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