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Two green DDR5 RDIMM modules with black chips and gold contacts, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 128GB (2x64GB) Supermicro H13SST-GC memory upgrade

SKU CH-WBMS-VX84S

128 GB DDR5 4800 ECC registered DIMM kit (2 × 64 GB, CL40, 1.10 V) validated for the Supermicro H13SST-GC 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

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  • Exact-match 128 GB kit runs at rated DDR5-4800 speed
  • Registered ECC design prevents silent data corruption
  • 2Rx4 organisation fully populates every slot at capacity
  • 1 V operation matches server memory controller spec
  • Verified fit for Supermicro H13SST-GC motherboard

Exact-match DDR5 kit for Supermicro H13SST-GC

This 128GB kit delivers two 64GB DDR5-4800 Registered ECC RDIMMs built to the precise rank, voltage and timing the board expects. The modules install as a matched pair so the server recognises full capacity at rated speed without manual tuning.

Registered ECC architecture for full-slot stability

Registered buffering offloads the memory controller, allowing every populated slot to run at 128GB while on-die ECC corrects single-bit errors before they reach production workloads. The 288-pin RDIMM form factor fits only boards wired for registered memory — not UDIMM or SODIMM slots.

Replaces smaller or slower DDR5 kits in this

Upgrading from lower-capacity or higher-latency DDR5 RDIMMs removes a memory bottleneck for virtualisation density and in-memory databases. The jump is worth it when your workload saturates the current DIMM count or requires ECC integrity at the full 128GB ceiling.

How it compares

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

Price $3,653.99
Pricier than about 75% 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 $28.55 per GB
Pricier than about 80% 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

What speed does the DDR5-4800 interface run at on the Supermicro H13SST-GC?

The kit is rated at DDR5 4800 (PC5-38400) and will operate at that speed when the motherboard's memory controller is configured for the rated frequency.

What physical slot and form factor do these modules require?

Each module is a 288-pin DDR5 RDIMM, so the board must provide standard 288-pin DDR5 DIMM slots; UDIMM or SODIMM slots will not accept them.

How should the two 64 GB RDIMMs be installed, and what step is often missed?

Populate the slots in the exact order listed in the Supermicro H13SST-GC manual; the step most often missed is following that specific population sequence for dual-rank registered DIMMs.

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