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Green bare circuit board DDR5 server memory module with black chips and gold edge connector

NEMIX RAM

NEMIX RAM 128GB DDR5 4800 ECC RDIMM 4Rx4 CL40 1.1V SuperMicro Server Memory Upgrade

SKU CH-BHVC-SXS4Z

A 128 GB DDR5 4800 ECC registered DIMM with CL40 latency and 1.1 V operation for compatible SuperMicro servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity scales memory-heavy workloads
  • DDR5 4800 speed feeds data to demanding CPUs
  • ECC registered design protects data integrity
  • 1 V operation reduces server power draw
  • Validated for Supermicro SSG-521E and X13SEDW-F systems

128 GB DDR5 ECC RDIMM for SuperMicro servers

This 128 GB DDR5 4800 registered DIMM adds error-correcting memory to compatible SuperMicro platforms including the SSG-521E-E1CR24H, SSG-521E-E1CR24L and X13SEDW-F. The single 4Rx4 module installs in a standard 288-pin DDR5 slot and operates at 1.10 V.

Sustained load stability with registered ECC

The registered buffer reduces electrical load on the memory controller while ECC detects and corrects single-bit errors during continuous operation. CL40 latency at PC5-38400 speed maintains consistent throughput for database, virtualization and storage workloads without the variability seen in unbuffered modules.

No heat spreader, direct airflow cooling

The bare PCB design relies on server chassis airflow rather than an integrated spreader, which is typical for high-density 128 GB RDIMMs in 1U and 2U SuperMicro systems. Major OEM Samsung, Micron or Hynix DRAM chips are stress tested under load before shipping to verify compatibility with the qualified platforms.

How it compares

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

Price $3,990.99
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 $31.18 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K1
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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (1 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How much power does the 1.1 V DDR5 module draw when running continuously in a Supermicro server?

The module operates at 1.10 V, the standard voltage for DDR5, which reduces power draw compared to previous generations; actual wattage depends on workload and the server's memory controller.

What motherboard slot and chipset support are required to install this 288-pin RDIMM?

A Supermicro motherboard with DDR5 RDIMM slots and a chipset that supports 4Rx4 registered ECC modules at 4800 MT/s is required; the memory is validated for the listed Supermicro Storage SuperServer models.

Can this 4Rx4 CL40 DDR5 RDIMM share channels with other DDR5 registered ECC modules of different capacity or rank?

Mixing is possible only if the Supermicro platform's memory population rules allow 4Rx4 modules alongside other registered ECC DDR5 DIMMs; consult the server manual for supported configurations.

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