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Two green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 4800 128GB 2x64GB CL40 1.1V ECC Registered RDIMM Supermicro H14SSF memory upgrade

SKU CH-YSC1-YYHFH

128 GB DDR5-4800 ECC registered RDIMM kit (2×64 GB, CL40, 1.1 V) validated for the Supermicro H14SSF motherboard

  • Total capacity128 GB (2 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 2X64GB

Show 24 more
  • 128 GB total capacity from a matched 2 x 64 GB kit
  • DDR5 4800 speed with CL40 timing for rated server performance
  • Registered ECC architecture offloads the controller and corrects single-bit errors
  • 1 V operation at 2Rx4 rank matches the motherboard memory controller
  • 288-pin RDIMM form factor verified for Supermicro H14SSF motherboard

Exact-fit DDR5 RDIMM kit for Supermicro H14SSF

This 128GB kit contains two 64GB DDR5 4800 CL40 registered ECC modules built to the exact rank, voltage and timing the H14SSF memory controller expects. It is designed for servers that require registered DIMMs with on-die ECC and will only work in systems that accept 288-pin DDR5 RDIMMs.

Verify DIMM population rules

Consult the motherboard manual for the approved slot order, maximum capacity per channel and any BIOS version requirements before ordering. The board must support 2Rx4 registered modules at 1.1V; mixing with unbuffered or different-rank DIMMs will prevent the system from posting at full speed.

Replaces slower or smaller registered DDR5 kits

The upgrade is worthwhile when the current configuration runs below 4800 MT/s, uses lower-density modules that limit total capacity, or lacks ECC protection. It is not suitable for workstations that require unbuffered UDIMMs, laptops needing SODIMMs, or any platform that does not support registered DDR5 memory.

How it compares

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

Price $3,233.99
Pricier than about 74% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (2 × 64 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $25.27 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 numberMR38400-924K2
Total capacity128 GB (2 × 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 items128 GB 2 × 64 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 the 128GB kit include only the two 64GB DDR5 RDIMMs or are any extra parts supplied?

The package contains exactly two 64GB DDR5 4800 CL40 1.10V 288-pin ECC Registered RDIMMs and nothing else.

Should I pick the 2Rx4 128GB kit or a different rank for my Supermicro H14SSF?

The 2Rx4 organisation matches the board's qualified population rules for full-capacity operation at DDR5-4800.

Will the CL40 timing run at the advertised 4800 MT/s once installed in the H14SSF?

Yes, the modules are spec-matched to the motherboard's memory controller so they initialise at DDR5-4800 with CL40 latency.

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