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Green printed circuit board with black DDR5 memory chips on both sides, gold 288-pin edge connector, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 ECC RDIMM 128GB 4800 CL40 2Rx4 1.1V H13SSH memory upgrade

SKU CH-5EV2-47SSH

128 GB DDR5-4800 ECC registered RDIMM, CL40 1.1 V 2Rx4, validated for Supermicro H13SSH 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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  • Exact-fit DDR5-4800 CL40 2Rx4 registered ECC module for Supermicro H13SSH
  • 128 GB capacity per DIMM enables high-density server configurations
  • 1 V operation reduces power draw in fully populated systems
  • Registered buffer offloads the memory controller for stable full-slot operation
  • On-die ECC corrects single-bit errors to prevent silent data corruption

Purpose-built server upgrade

This 128 GB DDR5 ECC Registered RDIMM is engineered for the Supermicro H13SSH motherboard. It delivers the exact rank structure, voltage and timing the board's memory controller expects so every slot can be populated at full rated speed.

Critical spec: registered ECC with 2Rx4 organisation

The module uses a 2Rx4 layout at 1.1 V with CL40 latency. Registered buffering offloads the memory controller while ECC corrects single-bit errors on the fly, preventing silent data corruption in production workloads.

Build integration: 288-pin RDIMM slot required

The kit fits only DDR5 RDIMM slots; it will not work in UDIMM or SODIMM sockets. Consult the H13SSH manual for approved population order and maximum supported capacity before installation.

How it compares

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

Price $3,806.99
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 $29.74 per GB
Pricier than about 85% 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

Other versions of this model

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Questions about this item

Will the DDR5-4800 CL40 rating run at full speed once installed in a Supermicro H13SSH server?

The module is spec-matched to the board's memory controller so the 128 GB stick initializes at DDR5-4800 with CL40 timing without manual tuning.

Does the 288-pin registered ECC design limit the maximum bandwidth the slot can deliver?

Registered buffering lets every populated slot operate at the rated PC5-38400 data rate while ECC corrects single-bit errors on the fly.

What physical clearance does the 128 GB RDIMM need inside the H13SSH chassis?

It uses the standard 288-pin RDIMM form factor with no heat spreader so it fits the board's DIMM slots and normal server airflow.

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