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Sixteen green DDR5 RDIMM sticks in a row

NEMIX RAM

NEMIX RAM 256GB (16x16GB) DDR5 4800 CL40 ECC RDIMM memory upgrade CSE-GS7A-000NBP3

SKU CH-7TH8-EA122 MPN CSE-GS7A-000NBP3

256GB DDR5 4800 ECC registered server memory kit with sixteen 16GB modules at CL40 and 1.1V

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeRegistered
  • Rated voltage1.1 V
  • 256 GB total capacity for high-density server workloads
  • DDR5 4800 MT/s speed with PC5-38400 bandwidth
  • ECC registered RDIMM ensures data integrity under load
  • 16 x 16 GB kit at 1.1 V CL40 latency
  • Validated for SuperMicro SuperWorkstation SYS-751A-I compatibility

256GB DDR5 4800 ECC RDIMM kit

This 256GB kit contains sixteen 16GB DDR5 4800 CL40 registered ECC modules. It is built for the Supermicro SuperWorkstation SYS-751A-I and the Super X13DAI-T motherboard. The modules run at 1.1V and use a 288-pin RDIMM form factor with 1Rx8 organisation.

Simple DIMM installation with manual reference

Installation follows standard RDIMM seating in the server or workstation board. The registered buffer and ECC function require a platform that explicitly supports registered DDR5 memory. The main risk is installing these modules in a consumer board that only accepts unbuffered non-ECC DIMMs, which will prevent boot.

DDR5 4800 registered ECC platform limits

The DDR5 4800 interface delivers PC5-38400 bandwidth, but total capacity and speed depend on the memory controller in the Supermicro system. Registered ECC modules cannot be mixed with unbuffered DIMMs, and the platform must validate the 1Rx8 rank configuration at CL40 latency. Exceeding the board's qualified vendor list or maximum supported capacity per channel will cause instability.

How it compares

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

Price $6,452.99
Pricier than about 82% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $25.21 per GB
Pricier than about 70% 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 numberMR38400-618K16
Total capacity256 GB (16 × 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 items256 GB (16 × 16 GB) DDR5 4800 MHz PC5-38400 1Rx8 1.1 V CL40 288-PIN ECC RDIMM Registered Server Memory

Questions about this item

How can I confirm the 256GB kit is running at DDR5 4800 CL40 after installation?

Check the BIOS memory information screen; it should show 256GB total, 4800 MT/s data rate, and CL40 latency timings for each of the 16 modules.

What does the package contain and is anything else required for the SuperMicro SYS-751A-I?

The box includes sixteen 16GB DDR5 4800 ECC RDIMM modules; no additional parts are needed for the listed SuperMicro workstation.

Should I choose the 16x16GB CL40 kit or a different capacity for the X13DAI-T motherboard?

The 16x16GB CL40 kit fills all slots for 256GB total; select it when the workload needs maximum registered ECC capacity at 4800 MT/s.

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