We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 128GB (4 x 32GB) DDR5 4800 CL40 1.1V 2Rx8 ECC RDIMM Supermicro H14SSF memory upgrade

SKU CH-CJAC-DPKGB

A 128 GB DDR5-4800 ECC RDIMM kit with 2Rx8 registered modules at 1.1 V CL40, validated for the Supermicro H14SSF motherboard

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB 4X32GB

Show 24 more
  • 128 GB total capacity across four 32 GB modules for high-density server workloads
  • DDR5-4800 speed with CL40 latency delivers rated throughput for the Supermicro H14SSF
  • Registered ECC architecture corrects single-bit errors and stabilises fully populated channels
  • 1 V operating voltage matches the platform's memory controller specification
  • 288-pin RDIMM form factor fits the motherboard's DDR5 slots without adapters

Server-grade DDR5 ECC RDIMM kit

This 128GB kit contains four 32GB DDR5 4800 CL40 registered ECC RDIMMs built for the Supermicro H14SSF motherboard. It targets administrators and integrators who need maximum registered memory capacity in a validated configuration.

Registered design for full-slot population

The 2Rx8 registered architecture buffers address and command signals so the memory controller can drive all four 288-pin slots at rated speed without signal degradation. ECC corrects single-bit errors on the fly, protecting data integrity in continuous workloads.

Replaces unbuffered or lower-capacity DDR5 RDIMMs

The jump is worth it when your workload demands the full 128GB at 4800 MT/s with registered stability and on-die ECC. Builders using consumer UDIMMs or mixed-rank modules cannot meet the board's population rules or error-correction requirements.

How it compares

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

Price $3,546.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.71 per GB
Pricier than about 77% 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 numberMR38400-328K4
Total capacity128 GB (4 × 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 items128 GB 4 × 32 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

Other versions of this model

5 more in the same range

Questions about this item

What is the registered ECC DDR5-4800 CL40 limit that shows up first under sustained use?

The kit runs at the rated DDR5-4800 speed with CL40 latency and 1.10 V across all four 32 GB modules, so the first sustained limit is the memory controller's maximum supported frequency and rank population.

How much heat or power does the 128 GB registered ECC kit draw when running all day?

Each module operates at 1.10 V without a heat spreader, so total power scales with the four 2Rx8 ranks under load; airflow across the 288-pin RDIMM sockets keeps temperatures in check.

What must the buyer already own for this 4 x 32 GB DDR5 kit to work?

A Supermicro H14SSF motherboard with 288-pin RDIMM slots that support registered ECC DDR5-4800 2Rx8 modules and the correct population order for four DIMMs.

More in Model-Specific Memory Upgrades

Similar items