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Eight green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM SuperMicro FatTwin memory upgrade

SKU CH-SBWB-6P1YG

Eight 128 GB DDR5 registered ECC modules running at 4800 MT/s with CL40 latency, built for SuperMicro FatTwin servers

  • Total capacity1 TB (8 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 1TB total capacity from eight 128GB modules
  • DDR5 4800 speed with CL40 latency
  • ECC registered RDIMM for data integrity
  • 10V operation on 288-pin DDR5 form factor
  • Validated for SuperMicro FatTwin SYS-F511E2-RT and SYS-F521E3-RTB

SuperMicro FatTwin DDR5 RDIMM kit

This 1 TB kit contains eight 128 GB DDR5 4800 registered ECC modules built for SuperMicro FatTwin servers. Each stick runs at 1.10 V with CL40 latency and a 4Rx4 organisation. The modules are 288-pin RDIMMs without heat spreaders and are validated for the SYS-F521E3-RTB, SYS-F511E2-RT and X13SEFR-A platforms.

Verify DDR5 RDIMM slot count and population rules

Confirm your SuperMicro FatTwin chassis has eight available DDR5 RDIMM slots and that the motherboard supports 4Rx4 registered modules at 4800 MT/s. Check the system manual for maximum capacity per channel and any required slot-filling order before installing all eight sticks. Ensure the platform accepts 1.10 V DDR5 registered memory.

Suits FatTwin operators needing maximum registered

Ideal for administrators expanding SuperMicro FatTwin SuperServers to the full 1 TB of registered ECC memory. Not suitable for systems that require unbuffered UDIMMs, lower-rank modules, or a different DDR generation. Buyers needing non-ECC memory, desktop DIMM form factors, or speeds above 4800 MT/s should look elsewhere.

How it compares

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

Price $31,397.99
Pricier than about 93% of the 21,161 comparable items (median $397.99).
Total capacity 1 TB (8 × 128 GB)
Higher than about 93% of the 20,941 comparable items (median 32 GB).
Price per GB $31.40 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineSuperMicro Server/Workstation Compatible Series Memory
Model nameSuperMicro DDR5 4800 MHz ECC RDIMM Registered Server Memory
Part numberMR38400-744K8
Total capacity1 TB (8 × 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
Heat spreaderNo
Memory rank4Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items1 TB (8 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

What is included in the 1TB kit and do I need to buy any extra parts?

The kit contains eight 128 GB DDR5 4800 CL40 4Rx4 ECC RDIMM modules, 288-pin, 1.1 V. No additional memory parts are required for a full 1 TB upgrade.

Why choose the 1 TB eight-module kit instead of a smaller capacity?

This kit provides the maximum 1 TB capacity using eight 128 GB registered ECC modules, matching the SuperMicro FatTwin SYS-F521E3-RTB, SYS-F511E2-RT and X13SEFR-A memory slots.

What does the DDR5 4800 CL40 rating mean once the modules are installed in a FatTwin server?

The modules run at 4800 MT/s with CAS latency 40 at 1.1 V, delivering PC5-38400 bandwidth per module for registered ECC operation in the compatible SuperMicro systems.

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