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Eight green DDR5 RDIMM sticks in anti-static tray

NEMIX RAM

NEMIX RAM 512GB (8x64GB) DDR5 4800 CL40 ECC RDIMM X13SEI-F X13SEI-TF memory upgrade

SKU CH-MGD3-ZJVGS

Eight 64 GB DDR5 4800 CL40 ECC registered DIMMs at 1.1 V for SuperMicro X13SEI-F and X13SEI-TF servers

  • Total capacity512 GB (8 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 512 GB total capacity from eight 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered design protects data integrity
  • Low 1.10 V operating voltage reduces power draw
  • Validated for SuperMicro X13SEI-F and X13SEI-TF motherboards

512 GB DDR5 ECC RDIMM kit for SuperMicro X13SEI-F

This 512 GB kit contains eight 64 GB DDR5 registered DIMMs built for SuperMicro X13SEI-F and X13SEI-TF motherboards. The modules run at 4800 MT/s with a CAS latency of 40 and operate at 1.10 V. ECC and registered buffering provide the data integrity required by server workloads.

Sustained-load behaviour with registered ECC

Registered buffering reduces electrical load on the memory controller, allowing all eight slots to stay populated without signal degradation during continuous operation. ECC corrects single-bit errors on the fly, preventing silent data corruption during long compute runs. The 1.10 V operating voltage keeps power draw steady under extended thermal stress.

CL40 latency at DDR5 4800 decides fit

The CL40 timing at 4800 MT/s is the single specification that determines whether this kit matches the motherboard's qualified vendor list. Systems validated for CL40 will train correctly; platforms requiring tighter latencies will not support these modules. Verify the QVL before purchase.

How it compares

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

Price $14,606.99
Pricier than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 512 GB (8 × 64 GB)
Higher than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $28.53 per GB
Pricier than about 80% 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 numberMR38400-924K8
Total capacity512 GB (8 × 64 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 items512 GB (8 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How much heat and power does the 1.10V DDR5 4800 CL40 kit produce when all eight 64GB modules run continuously?

The kit operates at 1.10V, the standard DDR5 voltage, so sustained power draw and heat scale with the 512GB capacity and 4800 MT/s speed rather than any elevated voltage.

What motherboard and CPU combination must I already own for this 288-pin 2Rx4 registered ECC memory to function?

You need a SuperMicro X13SEI-F or X13SEI-TF motherboard with a CPU that supports DDR5-4800 registered ECC RDIMMs and enough DIMM slots for all eight modules.

Will the CL40 4800 MT/s timing hold when I keep older DDR5 modules in the same server?

The board will run every installed module at the slowest common speed and highest latency; mixing different DDR5 kits forces all slots to the lowest shared specification.

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