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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM MR38400-744K4 512GB (4x128GB) DDR5 4800 CL40 1.1V 4Rx4 ECC RDIMM memory upgrade

SKU CH-5CEQ-PXDVV

A 512 GB registered DDR5 ECC kit of four 128 GB modules running at 4800 MT/s CL40 and 1.1 V for Supermicro servers

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity with four 128 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design detects and corrects data errors
  • 1 V low-voltage operation reduces power draw
  • Validated for Supermicro X13SET-G and X13SET-GC motherboards

512 GB DDR5 ECC RDIMM kit

This 512 GB kit contains four 128 GB DDR5 registered DIMMs built for Supermicro X13SET-G and X13SET-GC motherboards. It targets server and workstation administrators who need maximum registered ECC capacity in a four-module configuration.

CL40 latency at 4800 MT/s

The modules run at DDR5-4800 (PC5-38400) with a CAS latency of 40, delivering 512 GB of registered ECC headroom for virtualisation, large databases and memory-intensive compute workloads. Four ranks per module (4Rx4) increase density but limit further expansion on boards with only four slots.

1.1 V operation without heat spreaders

Each DIMM operates at 1.10 V and ships without heat spreaders, relying on chassis airflow for cooling in typical 1U or 2U server enclosures. Power draw scales with all four modules populated, so adequate case ventilation is required to maintain stable temperatures under sustained load.

How it compares

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

Price $14,710.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $28.73 per GB
Pricier than about 81% 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 numberMR38400-744K4
Total capacity512 GB (4 × 128 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 items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Will this DDR5 4800 kit run alongside any existing DDR5 modules already in my SuperMicro X13SET-G?

The kit is tested for the SuperMicro X13SET-G and X13SET-GC. Mixing with other DDR5 modules is possible but not validated; for guaranteed stability use identical 4800 CL40 4Rx4 registered ECC RDIMMs.

How can I confirm the 512 GB kit is detected and running at 4800 MT/s after installation?

Enter the system BIOS or UEFI and check the memory information screen — it should show 512 GB total, DDR5 4800 (PC5-38400), CL40 timings and registered ECC status for each of the four slots.

Does the package include only the four 128 GB RDIMMs or are any extra brackets or cables supplied?

The box contains the four 288-pin DDR5 RDIMM modules (4 × 128 GB) and nothing else; no brackets, cables or additional hardware are included.

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