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Two green DDR5 RDIMM modules side by side, bare circuit boards with gold edge connectors

NEMIX RAM

NEMIX RAM DDR5 4800 256GB 2x128GB CL40 ECC RDIMM Supermicro H13SSW memory upgrade

SKU CH-CQ9V-1NRT1

256 GB DDR5-4800 ECC registered RDIMM kit (2 × 128 GB, CL40, 1.1 V) validated for the Supermicro H13SSW 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 for maximum server density
  • DDR5 4800 speed with CL40 latency matches the motherboard's rated timing exactly
  • Registered ECC design corrects single-bit errors and offloads the memory controller
  • 1 V operation at 2Rx4 rank aligns with the platform's voltage and population rules
  • 288-pin RDIMM form factor fits the Supermicro H13SSW DIMM slots precisely

Supermicro H13SSW DDR5 upgrade

This 256 GB kit delivers two 128 GB DDR5 4800 RDIMMs built to the Supermicro H13SSW motherboard's exact memory-controller requirements. It targets server administrators who need registered ECC memory that the board recognises at full capacity and rated speed without manual tuning.

DDR5 4800 RDIMM limits

The modules operate at DDR5 4800 (PC5-38400) with CL40 latency at 1.10 V, the standard JEDEC ceiling for this generation. Registered buffering and 2Rx4 organisation allow every slot to run fully populated, but the kit cannot exceed the motherboard's qualified-vendor list, maximum per-slot capacity or population-order rules.

2Rx4 registered ECC decides fit

The dual-rank 2Rx4 registered ECC layout is the single specification that determines whether this kit works in your H13SSW configuration. If your system requires single-rank UDIMMs, non-ECC modules or a different rank structure, this memory will not be compatible.

How it compares

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

Price $7,709.99
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 $30.12 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

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Questions about this item

Should I choose the 2x128GB kit or a different capacity for my Supermicro H13SSW?

The 256GB kit provides two 128GB RDIMMs at DDR5-4800 CL40 1.1V 2Rx4, matching the board's registered ECC requirements for full-capacity operation.

What does the DDR5-4800 PC5-38400 rating deliver in this server?

It runs at 4800 MT/s with CL40 latency at 1.1V, giving the rated bandwidth of PC5-38400 when the motherboard populates both slots with these registered ECC modules.

How does the 288-pin RDIMM interface limit speed and capacity on this platform?

The registered 288-pin DDR5 RDIMM form factor lets the H13SSW memory controller drive both 128GB 2Rx4 modules at the full 4800 MT/s rated speed without downclocking.

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