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Green rectangular DDR5 RDIMM module with black memory chips on both sides, gold edge connector, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 4800 128GB CL40 2Rx4 RDIMM memory upgrade

SKU CH-NKZG-DJNE4

128GB DDR5 4800MHz registered ECC RDIMM with CL40 latency and 1.1V operation, validated for Supermicro H13SSL-N motherboards

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

Size 128GB

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  • 128 GB DDR5 capacity for large server workloads
  • DDR5-4800 speed rated at PC5-38400 bandwidth
  • CL40 CAS latency with 1.1 V operating voltage
  • 2Rx4 registered ECC design for data integrity
  • 288-pin RDIMM form factor fits Supermicro H13SSL-N

Server-grade DDR5 128GB RDIMM

This NEMIX RAM module delivers 128GB of DDR5-4800 (PC5-38400) capacity in a 288-pin Registered DIMM form factor. It operates at 1.10V with CL40 latency and 2Rx4 organisation. ECC and registered buffering provide the data-integrity and signal-integrity features required by the Supermicro H13SSL-N motherboard.

Thermals noise and power draw

Running at the standard 1.10V DDR5 voltage, the module draws minimal power and generates low heat without a heat spreader. Passive airflow in a typical server chassis is sufficient for normal operation. No active cooling or additional power connectors are needed.

Upgrade path and fitment

The kit replaces lower-capacity DDR5 RDIMMs or fills empty slots on the H13SSL-N platform, enabling full-population configurations at rated speed. It is not suitable for systems that require UDIMM or SODIMM form factors, nor for boards that do not support Registered ECC memory.

How it compares

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

Price $3,877.99
Pricier than about 76% 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 $30.30 per GB
Pricier than about 87% 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 numberMR38400-724K1
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 288-pin RDIMM in my Supermicro H13SSL-N, and which slot order do people get wrong?

Insert the module into the DDR5 slots following the motherboard manual's population sequence; the 2Rx4 rank layout and registered buffer require exact slot order so the controller initialises all 128 GB at 4800 MT/s.

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

No scheduled maintenance is required; ECC corrects single-bit errors on the fly, and the module is covered by a lifetime replacement warranty if a hardware fault ever develops.

What limit appears first when this memory runs sustained workloads at 4800 MT/s?

The CL40 latency at 1.1 V is the primary timing boundary; sustained throughput is capped by the DDR5-4800 data rate and the registered buffer's command scheduling.

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