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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM 1TB (8x128GB) DDR5 4800 CL40 4Rx4 ECC RDIMM SuperMicro X13SEI-F X13SEI-TF memory upgrade

SKU CH-FK41-HD98W

Eight 128 GB DDR5 4800 CL40 registered ECC modules add 1 TB to SuperMicro X13SEI-F and X13SEI-TF 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 with eight 128GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design for server data integrity
  • 4Rx4 quad-rank layout with CL40 latency
  • 1V operating voltage on 288-pin RDIMM form factor

1TB DDR5 ECC RDIMM kit

This NEMIX RAM kit supplies 1TB of DDR5 memory through eight 128GB registered DIMMs. Each module runs at 4800MT/s with CL40 latency at 1.1V and uses a 4Rx4 organisation with on-die ECC. The 288-pin RDIMM form factor is built for Supermicro X13SEI-F and X13SEI-TF motherboards.

Suited for memory-hungry servers; not for desktops

These registered ECC modules are intended for Supermicro server platforms that require registered memory and can populate eight slots. Workstations or consumer boards that only accept unbuffered non-ECC DIMMs cannot use this kit. Buyers needing lower capacities or standard UDIMMs should choose a different product.

Eight-slot registered DDR5 requirement

The kit delivers its full 1TB only when all eight DIMM slots are filled with registered DDR5 modules supported by the target Supermicro motherboards. Systems with fewer slots, different memory architectures or unbuffered-only controllers cannot utilise this configuration.

How it compares

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

Price $33,120.99
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 $33.12 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

How does the 4800 MT/s data rate translate to throughput in a SuperMicro X13SEI-F system?

The DDR5 4800 modules run at PC5-38400, so each channel can move up to 38400 MB/s of bandwidth when the memory controller operates at the rated data rate.

What does the PC5-38400 label cap in practice for this registered ECC kit?

PC5-38400 caps the peak transfer rate at 38400 MB/s per channel; the registered ECC design adds one cycle of buffering and error correction without changing that ceiling.

Will the 288-pin 128 GB 4Rx4 modules clear the CPU cooler on a SuperMicro X13SEI-TF board?

The 288-pin DDR5 RDIMM sticks have no heat spreader and follow the standard low-profile height, so they fit the X13SEI-TF DIMM slots without interfering with typical server coolers.

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