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Twelve green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 1.5TB (12x128GB) 2Rx4 CL40 1.1V Supermicro H13SSF

SKU CH-PCWJ-3TNCQ

A 1.5 TB DDR5 registered ECC kit of twelve 128 GB modules at 4800 MHz CL40, 1.1 V, 2Rx4, validated for the Supermicro H13SSF motherboard

  • Total capacity1.5 TB (12 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 1.5TB 12X128GB

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  • 5 TB total capacity from twelve 128 GB modules
  • DDR5-4800 speed with CL40 latency for rated throughput
  • Registered ECC design corrects single-bit errors automatically
  • 1 V operation matches server memory-controller specifications
  • Verified fit for Supermicro H13SSF motherboard

NEMIX RAM DDR5 4800 ECC RDIMM Kit

This 1.5TB kit contains twelve 128GB registered DDR5 modules built for the Supermicro H13SSF motherboard. Each stick runs at 4800 MT/s with CL40 latency at 1.1V and uses a 2Rx4 organisation. The 288-pin RDIMM form factor matches the board's populated slots exactly.

Suited for admins maximising the H13SSF memory

It serves workloads that need full-slot population with error correction and registered buffering. Builds requiring unbuffered UDIMMs, SODIMM form factors, lower capacities per module, or non-ECC memory should look elsewhere.

Twelve slots deliver 1.5TB of registered ECC

The kit handles large virtualisation clusters, in-memory databases and heavy compute jobs that scale across every channel. Headroom ends when the platform's maximum supported density per slot or total system limit is reached.

How it compares

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

Price $49,726.99
Pricier than about 96% of the 21,161 comparable items (median $397.99).
Total capacity 1.5 TB (12 × 128 GB)
Higher than about 97% of the 20,941 comparable items (median 32 GB).
Price per GB $33.15 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K12
Total capacity1.5 TB (12 × 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 items1.5 TB 12 × 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

Will these 12 modules fill every slot on my Supermicro H13SSF motherboard?

The kit provides 12 modules at 128GB each; consult the H13SSF manual for its exact slot count and population order before installing.

Does the 2Rx4 registered design let me run all 12 modules at full DDR5 4800 speed?

Yes, the registered architecture buffers the command bus so the memory controller can drive every populated slot at the rated 4800 MT/s.

After boot, how can I confirm the full 1.5TB is recognised and ECC is active?

Check the BIOS memory summary or OS tools such as dmidecode; they should show 1.5TB total and ECC status enabled for each 2Rx4 module.

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