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Eight green DDR5 RDIMM modules in anti-static tray

NEMIX RAM

NEMIX RAM CSE-735D4-1K26B 128GB (8x16GB) DDR5 4800 CL40 ECC RDIMM memory upgrade

SKU CH-6H0F-7WBD7 MPN CSE-735D4-1K26B

128 GB DDR5 ECC registered server kit with eight 16 GB modules at 4800 MT/s CL40 for Supermicro workstations

  • Total capacity128 GB (8 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 128 GB capacity across eight 16 GB modules
  • DDR5 4800 speed rated at PC5-38400
  • ECC registered design for data integrity
  • CL40 latency at 1.1 V operation
  • Validated for Supermicro SYS-531A-I workstation

Compatible Supermicro DDR5 RDIMM kit

This 128 GB kit contains eight 16 GB DDR5 4800 registered ECC modules built for Supermicro platforms. Each stick runs at 1.1 V with CL40 latency and a 1Rx8 organisation. The 288-pin RDIMM form factor fits the SuperWorkstation SYS-531A-I and Super X13SRA-TF systems named in the compatibility list.

Workstations and servers needing registered ECC

Buyers who need unbuffered UDIMMs or non-ECC modules for consumer boards should look elsewhere. Systems that cannot accept registered DDR5 or that require a different pin count will not work with this kit.

DDR5 4800 registered ECC specification

The registered ECC design with 1Rx8 ranking and 1.1 V operation is the single parameter that determines fit. Verify that the target motherboard supports DDR5 RDIMM at this speed and voltage before purchasing.

How it compares

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

Price $3,511.99
Pricier than about 75% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (8 × 16 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $27.44 per GB
Pricier than about 76% 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 numberMR38400-618K8
Total capacity128 GB (8 × 16 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 rank1Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB (8 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory KIT

Questions about this item

How do I install the 8x16GB DDR5 RDIMM kit in a Supermicro SYS-531A-I, and which step is often missed?

Power off, open the chassis, align each 288-pin module with the slot key, press firmly until both latches click, then verify all eight modules are recognised in BIOS — the step often missed is seating every module fully so both latches engage.

What maintenance or replacement will the 128GB DDR5 ECC registered kit need later?

No scheduled maintenance is required; the modules have no heat spreaders and run at 1.10 V, so only a failed DIMM would need replacement under the lifetime warranty.

What limit appears first when the 4800 CL40 1Rx8 kit runs sustained workloads?

The CL40 latency at DDR5-4800 sets the throughput ceiling; sustained loads will hit that timing boundary before voltage or thermal limits become a factor.

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