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Green circuit board with black memory chips in a row, gold edge connector, no heat spreader

NEMIX RAM

NEMIX RAM DDR5 4800 128GB 2Rx4 CL40 RDIMM Supermicro H14DST-FL memory upgrade

SKU CH-0DYP-B200M

128 GB DDR5-4800 registered ECC RDIMM at 1.1 V, CL40, 2Rx4, validated for Supermicro H14DST-FL servers

  • Total capacity128 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 128GB

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  • Exact DDR5-4800 spec match ensures full-speed operation at rated 4800 MT/s
  • Registered ECC design corrects single-bit errors for uninterrupted server uptime
  • 2Rx4 128 GB module fills one slot to reach high capacity
  • 1 V DDR5 voltage lowers power draw versus previous generations
  • Verified fit for Supermicro H14DST-FL with 288-pin RDIMM form factor

Exact-match server upgrade

This 128GB DDR5 module is built for the Supermicro H14DST-FL motherboard. It arrives as a single 288-pin RDIMM with registered ECC architecture, matching the board's required form factor and memory-population rules precisely.

Capacity and headroom

The kit delivers 128GB at DDR5-4800 (PC5-38400) with a 2Rx4 rank structure and CL40 latency. Registered buffering lets the memory controller drive every populated slot at full rated speed, while ECC corrects single-bit errors on the fly to protect production workloads.

Thermals and power

Operating at 1.1V without a heat spreader, the module relies on server chassis airflow for cooling. The low voltage and registered design keep power draw modest under normal loads, and the absence of a spreader saves vertical clearance in dense configurations.

How it compares

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

Price $4,128.99
Pricier than about 77% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $32.26 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 lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-724K1
Total capacity128 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
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB DDR5 4800 MHz PC5-38400 2Rx4 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will this 128GB DDR5-4800 RDIMM run at its rated speed alongside older DDR5 modules I already have in my Supermicro H14DST-FL?

This module runs at 4800 MT/s with CL40 at 1.1 V. The server will clock all installed DIMMs to the slowest module present, so matching speed, voltage, rank (2Rx4) and registered ECC type is required for full-rated operation.

How can I confirm the kit is recognised at 128GB with ECC active after installation?

Check the BIOS memory information or the OS memory report — both should show 128GB total capacity, DDR5-4800 speed, and ECC enabled. Registered DIMMs also report their rank (2Rx4) in the SPD data.

Does the package contain only the 128GB RDIMM or are screws, a heat spreader or a cable included?

The box contains the 128GB DDR5-4800 2Rx4 CL40 1.1 V 288-pin ECC Registered RDIMM only. No heat spreader, mounting hardware or cables are supplied.

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