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Eight green DDR5 RDIMM modules in a row, black chips on both sides, gold edge connectors, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 4800 ECC Registered RDIMM 256GB 8x32GB CL40 1.1V 2Rx8 Supermicro H14SSF memory upgrade

SKU CH-PMRM-TBF8C

256 GB DDR5-4800 ECC registered RDIMM kit (8 × 32 GB, CL40, 1.1 V, 2Rx8) validated for the Supermicro H14SSF motherboard

  • 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 24 more
  • Exact-match 256GB DDR5-4800 kit installs at full rated speed
  • Registered ECC architecture corrects single-bit errors preventing silent data corruption
  • Verified fit for Supermicro H14SSF motherboard with 288-pin RDIMM form factor
  • 1V CL40 timing matches controller expectations for stable fully-populated operation
  • Major OEM Samsung Micron Hynix chips deliver enterprise-grade reliability

NEMIX RAM DDR5 4800 ECC RDIMM 256GB Kit

This 256GB kit contains eight 32GB DDR5 4800 Registered ECC RDIMMs built for the Supermicro H14SSF motherboard. Each module runs at 1.1V with CL40 latency and a 2Rx8 organisation. The registered buffer lets the memory controller drive every slot at the rated speed without signal degradation.

Ideal for H14SSF servers needing maximum

Administrators populating all DIMM slots on a Supermicro H14SSF board will match the board's population rules exactly. Builders using desktop boards, workstations that require unbuffered UDIMMs, or systems limited to lower densities should look elsewhere.

2Rx8 registered ECC at DDR5 4800 1.1V

The dual-rank 2Rx8 registered ECC design at 1.1V is the single specification that determines whether the H14SSF memory controller will initialise the kit at full 256GB capacity and 4800 MT/s. If your platform requires a different rank structure, voltage or unbuffered modules, this kit will not function.

How it compares

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

Price $6,700.99
Pricier than about 82% 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 $26.18 per GB
Pricier than about 72% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-328K8
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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 8 × 32 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the Samsung, Micron or Hynix chips on these modules need replacement before the server reaches end of life?

The DRAM chips are rated for continuous server operation and the kit carries a lifetime replacement warranty, so no scheduled chip replacement is expected.

What limits sustained throughput first — the CL40 latency or the 4800 MT/s data rate?

At DDR5-4800 the 4800 MT/s transfer ceiling is reached before CL40 latency becomes the bottleneck in typical server workloads.

How much power do the eight 32 GB registered DIMMs draw at 1.1 V when fully populated?

Eight modules at 1.1 V stay within the DDR5 RDIMM power envelope, and the registered design reduces electrical load on the memory controller during all-day operation.

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