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Four green DDR5 RDIMM modules with black chips, no heat spreaders

NEMIX RAM

NEMIX RAM CSE-735D4-1K26B 256GB (4x64GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-QYV3-DRW2V MPN CSE-735D4-1K26B

256GB DDR5 4800 ECC registered server memory kit, four 64GB modules at CL40 1.1V for SuperMicro SYS-531A-I workstations

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity from four 64 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • ECC registered RDIMM ensures data integrity for servers
  • 1 V operating voltage reduces power draw
  • Validated for Supermicro SuperWorkstation SYS-531A-I compatibility

256GB DDR5 ECC RDIMM kit

This NEMIX RAM kit provides 256GB of DDR5 4800 memory across four 64GB registered DIMMs. It operates at 1.1V with CL40 latency and includes on-die ECC for data integrity. The modules are validated for Supermicro SuperWorkstation SYS-531A-I and X13SRA-TF platforms.

Suited for ECC server workloads.

IT professionals running virtualisation, databases or render farms on compatible Supermicro hardware will benefit from the registered buffer and error correction. Builders using consumer motherboards without RDIMM support or those needing higher frequencies should consider other memory types.

Fits Supermicro DDR5 RDIMM slots.

Each 288-pin module installs directly into the workstation's DDR5 RDIMM sockets without additional cooling hardware. The four-module population delivers maximum capacity per channel, leaving no empty slots for future upgrades on this platform.

How it compares

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

Price $6,353.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (4 × 64 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $24.82 per GB
Pricier than about 69% 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 numberMR38400-924K4
Total capacity256 GB (4 × 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 items256 GB (4 × 64 GB) DDR5 4800 MHz PC5-38400 2Rx4 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

Does my Supermicro SYS-531A-I motherboard support 288-pin DDR5 RDIMM modules at 4800 MT/s?

Yes. The kit is validated for the Supermicro SuperWorkstation SYS-531A-I and Super X13SRA-TF platforms using 288-pin DDR5 RDIMM slots at 4800 MT/s.

Can I add these 2Rx4 CL40 modules alongside existing DDR5 ECC RDIMMs running at a lower speed?

The system will train all installed DDR5 ECC RDIMMs to the lowest common speed and tightest shared timings, so mixed speeds settle at the slower rate.

How do I confirm the full 256 GB is recognised and ECC is active after installation?

Enter the BIOS or UEFI and verify the memory summary shows 256 GB at 4800 MT/s with ECC status reported as enabled or active.

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