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Four green DDR5 RDIMM modules, black chips, no heat spreaders

NEMIX RAM

NEMIX RAM DDR5 4800 CL40 256GB 4x64GB ECC RDIMM Supermicro H13SST-GC memory upgrade

SKU CH-HJFH-EAPRT

A 256 GB DDR5-4800 registered ECC kit of four 64 GB RDIMMs validated for the Supermicro H13SST-GC motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

Show 24 more
  • 256 GB total capacity for large-scale server workloads
  • DDR5 4800 MT/s speed matches the board's rated frequency
  • CL40 latency and 1.10 V voltage specified for the memory controller
  • 2Rx4 registered ECC design corrects single-bit errors on the fly
  • Four 64 GB modules in a 288-pin RDIMM kit for full-slot population

Supermicro H13SST-GC DDR5 upgrade

This 256GB kit delivers four 64GB DDR5-4800 Registered ECC RDIMMs built to the exact rank, voltage and timing the Supermicro H13SST-GC memory controller expects. The modules run at PC5-38400 with CL40 latency at 1.1V, so the board recognises full capacity at rated speed without manual tuning.

Who this suits and who it does not

It fits administrators populating all slots on a Supermicro H13SST-GC with Registered DDR5 ECC memory that matches the board's population rules. Builders needing unbuffered UDIMMs, SODIMMs, lower densities, non-ECC modules or a different DDR generation should look elsewhere because this kit is none of those.

The deciding specification

The 2Rx4 Registered ECC organisation at DDR5-4800 1.1V CL40 is the single parameter that determines whether the motherboard will initialise the full 256GB at rated performance.

How it compares

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

Price $7,031.99
Pricier than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $27.47 per GB
Pricier than about 77% 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 numberMR38400-924K4
Total capacity256 GB (4 × 64 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 4 × 64 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

What comes in the 256GB kit and is anything else needed for the Supermicro H13SST-GC?

The box contains four 64GB DDR5 4800 CL40 2Rx4 1.1V 288-pin ECC registered RDIMM modules. No extra parts are required; the kit matches the board's memory population rules.

Why choose the 4x64GB 2Rx4 CL40 kit instead of a different capacity or rank?

This exact 256GB 4x64GB 2Rx4 configuration is validated for the Supermicro H13SST-GC, so the memory controller recognises full capacity at the rated DDR5 4800 speed and timings.

What does the DDR5 4800 PC5-38400 rating mean once the modules are installed?

The server will run the memory at 4800 MT/s with CL40 latency at 1.1V, delivering the bandwidth and error-correction the platform expects for stable production workloads.

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