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Green rectangular DDR5 RDIMM module with black chips, no heat spreader, gold edge connector

NEMIX RAM

NEMIX RAM 48GB DDR5 6400 CL52 2Rx8 1.1V ECC RDIMM Supermicro H14SHM memory upgrade

SKU CH-WEWW-SDJMS

48GB DDR5 6400 CL52 2Rx8 1.1V ECC registered RDIMM built for the Supermicro H14SHM motherboard

  • Total capacity48 GB
  • Rated speedDDR5 6400 (PC5 51200)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL52
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • Exact-match 48GB DDR5-6400 CL52 1.1V 2Rx8 RDIMM recognized at full rated speed
  • Verified fitment for Supermicro H14SHM motherboard with required 288-pin registered form factor
  • Enterprise stability via registered architecture offloading memory controller and ECC correcting single-bit errors
  • Spec-matched to board memory population rules for full-capacity operation across all slots
  • Lifetime replacement warranty with free US-based technical support included

Exact-match server upgrade

This 48GB DDR5 module is built for the Supermicro H14SHM motherboard and delivers the precise 2Rx8 Registered ECC configuration that the board's memory controller expects. It operates at 6400 MT/s with a CL52 latency and 1.1V voltage so the system recognises the full capacity at rated speed without manual tuning.

Installation and population rules

The 288-pin RDIMM form factor fits only the registered DIMM slots on this platform; a UDIMM or SODIMM will not seat or function. Consult the motherboard manual for the approved population order and maximum supported capacity per channel before installing, as incorrect slot filling can prevent the server from posting.

Rank and voltage decide fit

The single specification that determines compatibility is the 2Rx8 Registered ECC layout at 1.1V; the H14SHM memory controller requires this exact rank structure and voltage to initialise the module at DDR5-6400. Systems needing a different rank, unbuffered DIMMs, or a voltage other than 1.1V cannot use this part.

How it compares

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

Price $1,225.99
Pricier than about 62% of the 21,161 comparable items (median $397.99).
Total capacity 48 GB
Higher than about 55% of the 20,941 comparable items (median 32 GB).
Price per GB $25.54 per GB
Pricier than about 70% 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 numberMR51200-4828K1
Total capacity48 GB
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 6400 (PC5 51200)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL52
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items48 GB DDR5 6400 MHz PC5-51200 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Questions about this item

How do I verify the module is running at DDR5 6400 CL52 1.1V after installation?

Enter the BIOS or UEFI and confirm the memory speed reads 6400 MT/s, CAS latency shows CL52, and voltage is set to 1.10 V; the registered ECC RDIMM should also report 48 GB per module with 2Rx8 organization.

What comes in the package and is anything else required?

The box contains one 48 GB DDR5 6400 PC5-51200 2Rx8 1.1 V CL52 288-pin ECC registered RDIMM; no heat spreader or extra cables are included, and no separate components are needed for installation.

Which capacity or version should I choose for my Supermicro H14SHM?

This specific part number MR51200-4828K1 is a single 48 GB DDR5 6400 registered ECC RDIMM validated for the H14SHM; select it when your board's population guide calls for a 2Rx8 1.1 V module at that speed.

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