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Green DDR5 RDIMM circuit board with gold edge contacts and black memory chips, no heat spreader

NEMIX RAM

NEMIX RAM 64GB DDR5 4800 CL40 2Rx4 ECC RDIMM SuperMicro memory upgrade

SKU CH-XTJE-EP30E

A 64GB DDR5 4800 CL40 ECC registered DIMM built for SuperMicro FatTwin SuperServer systems

  • Total capacity64 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 64 GB capacity supports large server workloads
  • DDR5 4800 MT/s delivers high memory bandwidth
  • ECC registered design protects data integrity
  • 10 V operation reduces power consumption
  • Validated for Supermicro FatTwin SYS-F521E3-RTB and SYS-F511E2-RT

64GB DDR5 4800 ECC RDIMM

This module is a single 64GB DDR5 4800 CL40 registered DIMM with ECC and a 2Rx4 organisation. It operates at 1.1V and uses the standard 288-pin DDR5 form factor. The part is built for SuperMicro FatTwin and SuperServer platforms including the SYS-F521E3-RTB, SYS-F511E2-RT and X13SEFR-A motherboard.

Suited for SuperMicro DDR5 servers needing

Administrators expanding or repairing compatible FatTwin or SuperServer systems can install this module directly. It is not intended for desktop boards that accept only unbuffered non-ECC DIMMs, nor for platforms that require a different voltage, pin count or memory generation.

Registered ECC with 2Rx4 organisation

The combination of registered signalling, on-die ECC and a dual-rank 2Rx4 layout determines whether the motherboard's memory controller can address the module. Verify that the target SuperMicro system lists MR38400-924K1 or an equivalent 64GB DDR5 4800 registered ECC part before ordering.

How it compares

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

Price $1,734.99
Pricier than about 66% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $27.11 per GB
Pricier than about 75% 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 numberMR38400-924K1
Total capacity64 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 rank2Rx4
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items64 GB (1 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

Will this DDR5 4800 CL40 2Rx4 ECC RDIMM run correctly if I keep my existing DDR5 4800 modules in the other slots?

Yes, this registered ECC DDR5 module operates at 4800 MT/s with CL40 timing and 1.1 V. Matching speed, voltage, rank and ECC type across all populated channels lets the memory controller train without down-clocking.

How can I confirm the module is detected and running at 4800 MT/s with ECC active after installation?

Enter the SuperMicro BIOS or use a tool such as dmidecode; you should see a single 64 GB DDR5 RDIMM at 4800 MT/s, CL40, 2Rx4 organisation, registered ECC enabled and voltage reported as 1.1 V.

What exactly ships in the box and do I need any extra brackets or cables?

The package contains one 64 GB 288-pin DDR5 RDIMM only; no heat spreader, brackets, cables or additional hardware are included or required for installation in a compatible SuperMicro server.

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