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Four green DDR5 RDIMM modules, bare circuit boards, no heat spreaders

NEMIX RAM

NEMIX RAM 512GB (4x128GB) DDR5 4800 ECC RDIMM CL40 1.1V 288-Pin memory upgrade

SKU CH-WF7H-ZR5VB

512 GB of DDR5 ECC registered server memory in four 128 GB modules running at 4800 MHz CL40 and 1.1 V for Supermicro platforms

  • Total capacity512 GB (4 × 128 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity scales memory-heavy workloads
  • Four 128 GB modules populate all channels for balanced bandwidth
  • DDR5 4800 speed delivers PC5-38400 data rates
  • ECC registered design corrects errors and stabilises server platforms
  • Low 1.1 V operation reduces power draw per module

512GB DDR5 ECC RDIMM kit

This NEMIX RAM kit delivers 512GB of DDR5 4800 ECC registered memory across four 128GB modules. It targets IT professionals managing Supermicro X13SEI-F or X13SEI-TF server and workstation platforms that require registered DIMMs with error correction.

Tool-free DIMM installation

Modules seat into standard 288-pin DDR5 RDIMM slots without tools; align the key notch and press until the latches click. Common issues include mixing registered and unbuffered DIMMs, populating slots in the wrong channel order, or forgetting to enable ECC in the BIOS after installation.

Verify motherboard and CPU support

Confirm the X13SEI-F or X13SEI-TF motherboard revision supports 128GB 4Rx4 registered modules at 4800MT/s and 1.1V. Check the processor's maximum memory capacity and channel population rules before ordering, as not all CPUs in the platform address the full 512GB.

How it compares

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

Price $16,040.99
Pricier than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (4 × 128 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $31.33 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 numberMR38400-744K4
Total capacity512 GB (4 × 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 items512 GB (4 × 128 GB) DDR5 4800 MHz PC5-38400 4Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I verify the kit is running at DDR5 4800 CL40 after installation?

Check the memory speed and timings in your BIOS or a tool like CPU-Z; the modules should report 4800 MT/s and CAS latency 40 when the system is configured correctly.

What is included in the package and is anything else required?

The box contains the 512 GB kit as four 128 GB 288-pin DDR5 RDIMMs; no extra parts are needed for installation on a compatible Supermicro board.

Which capacity version should I choose for a Supermicro X13SEI-F or X13SEI-TF motherboard?

This 512 GB kit (4 x 128 GB, 4Rx4, 1.1 V, ECC registered) matches the supported DDR5 4800 specification for those Supermicro motherboards.

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