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Two green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 256GB 2x128GB DDR5 4800 ECC RDIMM Supermicro H13SVW-NT-OS1 memory upgrade

SKU CH-2JNS-HMDTM

256 GB DDR5 ECC registered DIMM kit, two 128 GB modules at 4800 MHz CL40 1.1 V, validated for Supermicro H13SVW-NT-OS1

  • Total capacity256 GB (2 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 2X128GB

Show 12 more
  • 256 GB total capacity from two 128 GB modules
  • DDR5-4800 speed with CL40 latency at 1.10 V
  • ECC and registered design prevents silent data errors
  • 288-pin RDIMM form factor matches Supermicro H13SVW-NT-OS1
  • Lifetime replacement warranty with US-based technical support

Exact-match DDR5 server upgrade

This 256GB kit contains two 128GB DDR5 4800 RDIMMs built to the Supermicro H13SVW-NT-OS1 memory controller specification. Registered ECC architecture with 2Rx4 organisation and CL40 timing at 1.1V ensures the modules are recognised at full capacity and rated speed. It is intended for administrators who need to populate every slot on this specific motherboard without compatibility guesswork.

Sustained-load behaviour

Registered buffering offloads the memory controller so all channels remain stable when fully populated at 4800 MT/s. ECC corrects single-bit errors on the fly, preventing silent data corruption during long compute runs. The 1.1V operating voltage keeps power draw predictable under continuous utilisation.

Installation notes

The 288-pin RDIMM form factor fits only the registered DIMM slots defined by the Supermicro H13SVW-NT-OS1 population rules; UDIMM or SODIMM slots will not accept them. No heat spreader is present, so airflow across the modules must follow the chassis design. Builders who need a different capacity or a non-registered module should select another kit.

How it compares

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

Price $8,273.99
Pricier than about 85% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (2 × 128 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $32.32 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K2
Total capacity256 GB (2 × 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
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 2 × 128 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

How much heat and power draw should I expect from the 2x128GB DDR5 4800 kit running continuously in a Supermicro H13SVW-NT-OS1?

The modules operate at 1.1V with no heat spreader, so they rely on chassis airflow; registered ECC RDIMM architecture reduces electrical load on the memory controller, keeping thermals manageable in a properly ventilated server.

What must my Supermicro H13SVW-NT-OS1 already have for this 256GB DDR5 4800 RDIMM kit to function?

The board needs free 288-pin DDR5 RDIMM slots that support 2Rx4 registered ECC modules at 1.1V and a BIOS version that recognises 128GB-per-DIMM density; consult the motherboard manual for approved population order.

Will this 2Rx4 DDR5 4800 CL40 registered ECC kit work alongside any existing DDR5 RDIMMs I keep in the same Supermicro server?

Mixing ranks, speeds or capacities can force the memory controller to downclock or disable slots; for stable operation populate all channels with identical 2Rx4 4800 CL40 1.1V modules per the board's population rules.

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