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Six green DDR5 RDIMM modules, no heat spreaders, 288 pins each

NEMIX RAM

NEMIX RAM 768GB (6x128GB) DDR5 4800 CL40 ECC RDIMM SuperMicro X13SEI-F/TF

SKU CH-YCWQ-VXM17

A 768 GB DDR5 registered ECC server memory kit of six 128 GB modules running at 4800 MT/s with CL40 latency, validated for SuperMicro X13SEI-F and X13SEI-TF motherboards

  • Total capacity768 GB (6 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • Massive 768GB capacity scales memory-heavy workloads
  • Six 128GB modules populate all channels for full bandwidth
  • DDR5 4800 speed moves data faster than previous standards
  • ECC and registered design protect data integrity under load
  • Validated for SuperMicro X13SEI-F and X13SEI-TF motherboards

768GB DDR5 ECC RDIMM Kit for SuperMicro X13SEI

This 768GB kit contains six 128GB DDR5 4800 CL40 registered ECC modules built for SuperMicro X13SEI-F and X13SEI-TF motherboards. It targets IT professionals running memory-intensive server workloads that require error correction and registered signalling.

Verify six free DDR5 RDIMM slots and CPU support

Confirm the motherboard has six available 288-pin DDR5 RDIMM slots and that the installed processors support 4Rx4 registered modules at 4800 MT/s. The kit operates at 1.1V with CL40 latency and requires a platform qualified for PC5-38400 registered memory.

Replaces smaller-capacity DDR5 RDIMM kits

The jump is worthwhile when moving from lower-density kits that leave slots empty or force mixed-rank populations. Six matched 128GB modules fill the board in a single validated configuration for maximum capacity.

How it compares

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

Price $24,828.99
Pricier than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 768 GB (6 × 128 GB)
Higher than about 92% of the 20,941 comparable items (median 32 GB).
Price per GB $32.33 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 numberMR38400-744K6
Total capacity768 GB (6 × 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 items768 GB (6 × 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 does the 768GB kit contain and is any extra hardware needed?

The kit contains six 128GB DDR5 4800 CL40 ECC RDIMM modules. No extra hardware is required for installation on the supported SuperMicro motherboard.

Which version should I choose for a SuperMicro X13SEI-F or X13SEI-TF system?

This part number MR38400-744K6 is built specifically for the X13SEI-F and X13SEI-TF, providing 768GB across six registered 4Rx4 modules at 1.10V.

What does the 4800 speed rating mean once the memory is installed in the server?

The modules run at DDR5 4800 (PC5-38400) with CL40 latency, delivering registered ECC bandwidth tuned for the SuperMicro platform.

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