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Four green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 256GB 4x64GB DDR5 4800 ECC RDIMM Supermicro H13SSH memory upgrade

SKU CH-BTJ9-80J2K

A 256 GB DDR5 server memory kit with four 64 GB registered ECC RDIMMs at 4800 MHz, CL40, 1.1 V, validated for Supermicro H13SSH motherboards

  • 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

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  • Full 256 GB capacity recognised at rated DDR5-4800 speed
  • Registered ECC design prevents silent data corruption under load
  • 1 V operation matches server memory-controller spec exactly
  • Four 64 GB 2Rx4 modules fill every slot on the H13SSH
  • 288-pin RDIMM form factor fits the motherboard without adapters

Exact-match DDR5 kit for Supermicro H13SSH

This 256GB kit contains four 64GB DDR5-4800 Registered ECC RDIMMs built to the precise rank, voltage, and timing the motherboard's memory controller expects. The modules are recognized at full capacity and run at their rated 4800 speed without manual tuning.

256GB capacity with registered architecture

Four dual-rank 2Rx4 modules populate the board's DIMM slots at the full 256GB, while the registered design offloads the memory controller so every slot runs stably when fully populated. ECC corrects single-bit errors on the fly, preventing silent data corruption and unplanned reboots in production workloads.

DDR5-4800 interface limits

The PC5-38400 standard sets the maximum transfer rate at 4800 MT/s with a CL40 latency at 1.1V, defining the bandwidth ceiling for this kit. Population rules and maximum supported capacity vary by motherboard revision, so the system manual must be consulted for approved DIMM order and any configuration constraints before installation.

How it compares

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

Price $6,196.99
Pricier than about 82% 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 $24.21 per GB
Pricier than about 69% 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

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Questions about this item

Will this 4x64GB DDR5 4800 RDIMM kit run at full speed alongside any existing DDR5 modules I keep in my Supermicro H13SSH?

The kit is spec-matched to the H13SSH memory controller at 4800 MT/s, 1.1 V and CL40; mixing with other DDR5 RDIMMs of identical speed, voltage, latency and rank will let the board train all slots at the rated frequency.

How can I verify the 256GB kit is recognised at full capacity and correct speed after installation?

Enter the BIOS on the Supermicro H13SSH and confirm the memory summary shows 256 GB total, DDR5 4800 MT/s, 1.10 V, CL40 and 2Rx4 registered ECC on all four channels.

What is included in the package and do I need any extra parts to install it?

The box contains the 256 GB (4 x 64 GB) DDR5 4800 RDIMM kit only; no heat spreaders, cables or tools are supplied, and the Supermicro H13SSH motherboard provides the required 288-pin RDIMM slots.

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