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Four green DDR5 RDIMM modules in a row, black chips no heat spreader

NEMIX RAM

NEMIX RAM DDR5 4800 128GB 4x32GB CL40 1.1V ECC RDIMM Supermicro H13SST-GC memory upgrade

SKU CH-5MS0-H3P9X

128 GB DDR5 4800 ECC RDIMM kit — four 32 GB modules at 1.1 V CL40, registered 2Rx8 for full-capacity stability on the Supermicro H13SST-GC 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 from four 32 GB modules for high-density server workloads
  • DDR5 4800 speed with CL40 latency delivers rated throughput on supported platforms
  • Registered ECC architecture corrects single-bit errors and buffers signals for stable fully populated operation
  • 10 V operating voltage matches the motherboard's memory controller specification exactly
  • 288-pin RDIMM form factor fits the Supermicro H13SST-GC memory slots without adapters

Exact-match upgrade kit

This 128GB kit supplies four 32GB DDR5-4800 Registered ECC RDIMMs built to the voltage and timing the Supermicro H13SST-GC memory controller expects. Each module runs at 1.1V with CL40 latency and a 2Rx8 organisation so the board recognises the full population at rated speed.

Verified fitment for H13SST-GC

The 288-pin RDIMM form factor matches the motherboard slots exactly — no UDIMM or SODIMM alternatives will fit. Registered buffering offloads the controller when all slots are filled while ECC corrects single-bit errors on the fly to prevent silent data corruption in production workloads.

Installation requires manual check

Server memory population rules differ by model so the system or motherboard manual must be consulted for supported capacities and approved DIMM order before the modules are seated. Skipping that step is the most common cause of modules not being detected or running at reduced speed.

How it compares

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

Price $3,722.99
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 $29.09 per GB
Pricier than about 82% 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 numberMR38400-328K4
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

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Questions about this item

Will the 1.1V RDIMM modules need replacement if the server runs continuously?

The kit is rated for 1.10V DDR5 operation; RDIMMs have no user-serviceable parts, so replacement is only required if a module fails.

What limit appears first when the kit runs at DDR5 4800 with all four slots populated?

The memory controller on the Supermicro H13SST-GC board governs maximum sustained throughput; the modules run at their rated 4800 speed within that limit.

How much heat and noise do the bare modules add when the system runs all day?

The modules have no heat spreaders and draw 1.1V; they add minimal thermal load and produce no audible noise themselves.

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