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Two green 288-pin DDR5 RDIMM modules with black chips and no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2 x 128GB) DDR5 4800 CL40 2Rx4 ECC Registered RDIMM Supermicro H13SVW-NT-OS2 memory upgrade

SKU CH-SGFX-MB78W

256 GB (2 × 128 GB) DDR5-4800 CL40 2Rx4 ECC registered RDIMM kit validated for the Supermicro H13SVW-NT-OS2 motherboard

  • 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

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  • 256 GB total capacity for dense server workloads
  • DDR5 4800 speed matches the board's rated memory bus
  • Registered ECC design corrects single-bit errors on the fly
  • 2Rx4 rank layout enables full-slot population at rated speed
  • 1 V operation meets the platform's voltage requirement

NEMIX RAM 256GB DDR5 4800 Registered ECC Kit

This 256GB kit contains two 128GB DDR5 4800 modules built to the PC5-38400 standard. Each stick is a 288-pin Registered RDIMM with 2Rx4 organisation, CL40 latency and 1.1V operation. It is designed as an exact-match upgrade for the Supermicro H13SVW-NT-OS2 motherboard.

Suited for administrators expanding that specific

The registered ECC design meets the board's requirement for buffered memory and single-bit error correction. Builders using consumer UDIMMs, SODIMMs, or non-ECC modules should look elsewhere because the platform will not accept them.

Deciding specification: 2Rx4 Registered ECC

The memory controller expects this exact rank, voltage and timing combination. If your system manual calls for a different rank structure, speed or voltage, the kit will not be recognised at full capacity or rated speed.

How it compares

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

Price $7,870.99
Pricier than about 84% 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 $30.75 per GB
Pricier than about 88% 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

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Questions about this item

How does the DDR5 4800 CL40 rating translate to actual throughput in a Supermicro H13SVW-NT-OS2 server?

The kit runs at 4800 MT/s with PC5-38400 bandwidth, so each 128 GB module delivers the full rated speed when the memory controller is configured for DDR5-4800 operation.

What does the 288-pin Registered ECC RDIMM interface mean for compatibility and maximum capacity?

The 288-pin RDIMM form factor with registered buffering and ECC is exactly what the H13SVW-NT-OS2 requires; it allows all slots to be populated at full 256 GB capacity while correcting single-bit errors.

What physical space and power do the two 128 GB modules need inside the chassis?

Each module is a standard 288-pin DDR5 RDIMM without a heat spreader, operating at 1.1 V, so they fit regular DIMM slots and draw the nominal voltage the board supplies.

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