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Green circuit board with black memory chips, gold edge connector, no heat spreader

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 ECC Registered RDIMM 2Rx4 CL40 1.1V Supermicro H13SSW memory upgrade

SKU CH-8ZMF-7DTE2

128 GB DDR5 4800 RDIMM with ECC and registered buffering, validated for Supermicro H13SSW servers

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

Size 128GB

Show 24 more
  • 128 GB DDR5 4800 runs at rated speed with exact-match timing CL40
  • Registered ECC 2Rx4 architecture offloads the controller and corrects single-bit errors
  • 10 V low-voltage operation meets the server memory controller specification
  • 288-pin RDIMM form factor fits the Supermicro H13SSW motherboard memory slots
  • Lifetime replacement warranty and free US-based technical support included

Exact-fit DDR5 RDIMM for Supermicro H13SSW

This 128 GB DDR5 4800 (PC5-38400) module is a registered ECC RDIMM built to the 2Rx4 rank and 1.1 V specification that the Supermicro H13SSW memory controller expects. It installs in the board's 288-pin slots and is recognised at full capacity and rated speed without manual tuning. The part suits administrators upgrading a single H13SSW system to its maximum supported density.

Passive thermals and low-voltage operation

With no heat spreader, the module relies on chassis airflow and runs at the standard DDR5 voltage of 1.1 V. Registered buffering reduces electrical load on the memory controller, helping keep power draw predictable when every slot is populated. The CL40 latency is the rated timing at 4800 MT/s, so the server operates within its validated thermal envelope during sustained workloads.

Enterprise-grade build with registered ECC

The registered architecture offloads the controller to allow full-population stability, while on-die ECC corrects single-bit errors before they reach production data. Major OEM DRAM from Samsung, Micron or Hynix underpins the kit. Buyers who need unbuffered UDIMMs, SODIMM form factors, or non-ECC memory for workstation or desktop platforms cannot use this module.

How it compares

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

Price $4,106.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.09 per GB
Pricier than about 90% 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 numberMR38400-724K1
Total capacity128 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 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 this 128GB DDR5 4800 RDIMM in my Supermicro H13SSW, and which slot-population step is most often missed?

Power down, open the chassis, and insert the 288-pin module into the slot specified by the motherboard manual for the desired capacity; the step most often missed is following the exact DIMM population order required when not all slots are filled.

What maintenance or replacement will this registered ECC module need over its service life?

No periodic maintenance is required; the module either continues operating or is replaced under lifetime warranty if a failure occurs, and ECC corrects single-bit errors on the fly without user intervention.

What is the first limit reached under sustained full-capacity load on this 128GB 2Rx4 kit?

The registered buffer and ECC logic keep every slot stable at the rated 4800 MT/s CL40 1.10 V, so the practical limit is the motherboard's maximum supported capacity rather than the memory itself.

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