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Two green DDR5 RDIMM modules with black chips no heat spreader

NEMIX RAM

NEMIX RAM 256GB (2x128GB) DDR5 4800 ECC RDIMM Supermicro H13SST-G

SKU CH-93VQ-BRXJF

256 GB DDR5 4800 ECC registered RDIMM kit in two 128 GB modules, validated for the Supermicro H13SST-G 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

Show 24 more
  • 256 GB total capacity from two 128 GB modules
  • DDR5 4800 speed with CL40 latency for rated throughput
  • ECC and registered design corrects errors and buffers signals
  • 1 V operation matches the motherboard's memory controller spec
  • 288-pin RDIMM form factor fits the Supermicro H13SST-G board

Exact-match DDR5-4800 kit for Supermicro H13SST-G

This 256 GB kit contains two 128 GB DDR5 RDIMMs rated at 4800 MT/s with CL40 timing and 1.1 V operation. The 2Rx4 registered ECC modules are built to the precise rank, voltage and timing the H13SST-G memory controller expects so the full capacity is recognised at rated speed. It targets administrators upgrading or populating this specific Supermicro server platform.

Sustained-load behaviour with registered ECC

Registered buffering offloads the memory controller, allowing both DIMM slots to run fully populated at the rated 4800 MT/s without down-clocking under continuous throughput. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots during long compute or database workloads. The 2Rx4 organisation maintains bandwidth consistency across all ranks.

Thermals, noise and power in normal operation

Operating at 1.1 V keeps per-module power draw low, and the absence of heat spreaders relies on the server's directed airflow for cooling. In a properly ventilated chassis the modules run within spec without adding audible fan noise beyond the system's baseline. The low voltage and registered architecture together minimise thermal contribution to the overall platform power budget.

How it compares

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

Price $7,508.99
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 $29.33 per GB
Pricier than about 83% 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 power does the 1.1 V DDR5 kit draw when the server runs all day?

Each module operates at 1.1 V, the standard DDR5 voltage, so total power scales with the 256 GB capacity and 4800 MT/s speed rather than any higher-voltage design.

What motherboard slot and population rules must I already have for this 288-pin RDIMM kit to work?

You need a Supermicro H13SST-G motherboard with free 288-pin RDIMM slots and must follow its manual for supported capacities and the approved DIMM population order.

Will the 2Rx4 registered ECC modules run at their rated 4800 speed alongside slower memory already installed in other slots?

The kit is spec-matched to the board's memory controller for 4800 MT/s CL40; mixing different speeds or ranks typically forces all slots down to the slowest common setting.

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