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Two green DDR5 RDIMM modules with black chips no heat spreader 288 pins each

NEMIX RAM

NEMIX RAM 256GB (2×128GB) DDR5 4800 CL40 ECC Registered RDIMM Supermicro H13DSG-O-CPU-D

SKU CH-NGHE-84TVF

A 256 GB DDR5 registered ECC kit with two 128 GB modules running at 4800 MT/s CL40 and 1.1 V, validated for the Supermicro H13DSG-O-CPU-D 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 from two 128 GB modules
  • DDR5 4800 speed with CL40 latency for rated performance
  • Registered ECC design corrects single-bit errors automatically
  • 1 V operation matches server memory controller expectations
  • 288-pin RDIMM form factor fits Supermicro H13DSG-O-CPU-D motherboard

Exact-match upgrade for Supermicro H13DSG-O-CPU-D

This 256GB kit contains two 128GB DDR5 4800 RDIMMs built to the board's required 2Rx4 registered ECC specification. It delivers the precise rank, voltage and timing the memory controller expects so the full capacity is recognised at rated speed.

Sustained-load behaviour

Registered architecture offloads the memory controller allowing every slot to run fully populated at full capacity without throttling. ECC corrects single-bit errors on the fly preventing silent data corruption and unplanned reboots during continuous production workloads.

Installation and common issues

The 288-pin RDIMM form factor fits only the board's registered DIMM slots; UDIMM or SODIMM modules will not seat. Consult the motherboard manual for supported capacities and the approved population order before installing to avoid a no-post condition.

How it compares

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

Price $7,691.99
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 $30.05 per GB
Pricier than about 86% 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 this 1.10 V DDR5 kit draw when the server runs 24/7?

The modules operate at 1.10 V, the standard voltage for DDR5 RDIMMs, so power draw per DIMM is lower than previous DDR generations at full load.

What motherboard slot and population rules are required for this 288-pin RDIMM kit?

The kit needs a Supermicro H13DSG-O-CPU-D motherboard with DDR5 RDIMM slots; consult the board manual for the approved 2Rx4 population order before installing both 128 GB modules.

Can I mix these 2Rx4 Registered ECC modules with other DDR5 RDIMMs of different rank or speed in the same server?

Mixing ranks or speeds is not recommended; the memory controller expects identical 2Rx4 CL40 modules at 4800 MT/s for stable operation across all populated channels.

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