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Four green DDR5 RDIMM sticks, bare chips, no heat spreader

NEMIX RAM

NEMIX RAM CSE-735D4-1K26B 512GB (4x128GB) DDR5 4800 ECC RDIMM memory upgrade

SKU CH-6TPD-QBR5A MPN CSE-735D4-1K26B

512GB DDR5 4800 ECC registered server memory kit in four 128GB modules for Supermicro workstations

  • 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 capacity across four 128 GB modules supports heavy server workloads
  • DDR5 4800 speed (PC5-38400) delivers high data throughput for demanding applications
  • ECC registered design detects and corrects memory errors to protect data integrity
  • 1 V operating voltage reduces power draw in dense configurations
  • Validated for Supermicro SuperWorkstation SYS-531A-I and X13SRA-TF platforms

512GB DDR5 ECC RDIMM kit for Supermicro

This 512GB kit contains four 128GB DDR5 4800 ECC registered DIMMs built for Supermicro SuperWorkstation SYS-531A-I and compatible X13SRA-TF platforms. Modules run at 1.1V with CL40 latency and a 4Rx4 organisation using major OEM DRAM. The registered design adds signal buffering for dense memory configurations.

Suited for high-capacity server

IT teams expanding memory in the named Supermicro systems will match the validated part number directly. Buyers needing non-ECC UDIMMs, lower capacities, or memory for consumer desktop boards should look elsewhere because this kit is registered ECC RDIMM only.

DDR5 4800 ECC RDIMM registered specification

The registered ECC RDIMM form factor and DDR5 4800 speed determine whether the modules install and function in the target Supermicro platforms. Confirm the motherboard accepts 288-pin DDR5 RDIMMs with 4Rx4 organisation before ordering.

How it compares

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

Price $16,194.99
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 $31.63 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 install the four 128 GB DDR5 4800 RDIMMs in the Supermicro SYS-531A-I and which slot order is the step people get wrong?

Populate all eight channels by filling the first slot of each channel before adding the second; the manual shows a specific 1-5-2-6-3-7-4-8 sequence that is often missed.

What maintenance or replacement will the 4Rx4 registered ECC modules need later?

No scheduled maintenance is required; if a module fails the lifetime replacement warranty covers a direct swap of the identical 128 GB DDR5 4800 RDIMM.

What limit appears first when the 512 GB kit runs sustained workloads at 1.1 V?

The CL40 latency at DDR5 4800 sets the throughput ceiling before thermal or voltage headroom becomes a factor.

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