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

NEMIX RAM

NEMIX RAM DDR5 4800 256GB 4x64GB ECC RDIMM CL40 2Rx4 1.1V Supermicro H14DST-FL memory upgrade

SKU CH-RFGW-DW5RB

256 GB DDR5-4800 ECC RDIMM kit (4 × 64 GB, CL40, 1.1 V, 2Rx4) validated for the Supermicro H14DST-FL motherboard

  • Total capacity256 GB (4 × 64 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 4X64GB

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  • 256 GB total capacity lets the Supermicro H14DST-FL run fully populated at rated speed
  • Registered ECC architecture corrects single-bit errors on the fly to prevent silent data corruption
  • DDR5 4800 CL40 timing matches the board's memory controller for immediate recognition at full frequency
  • 1 V operation with 2Rx4 organisation offloads the controller for stable performance across all four slots
  • 288-pin RDIMM form factor is the exact module type the H14DST-FL requires for this configuration

Exact-Match DDR5 Server Kit

This 256GB kit contains four 64GB DDR5 4800 registered ECC RDIMMs built to the precise specifications of the Supermicro H14DST-FL motherboard. The modules operate at 1.10V with CL40 latency and a 2Rx4 rank structure so the memory controller recognises the full capacity at rated speed.

2Rx4 Registered ECC Architecture

The registered buffer offloads the memory controller allowing every slot to run fully populated while ECC corrects single-bit errors on the fly. This combination prevents silent data corruption and unplanned reboots in production environments.

256GB Capacity For Dense Workloads

Four 64GB modules fill the board's DDR5 slots to deliver maximum registered memory capacity for virtualisation, database and compute tasks. Systems needing more than 256GB or unbuffered DIMM support will require a different platform.

How it compares

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

Price $7,239.99
Pricier than about 83% 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 $28.28 per GB
Pricier than about 79% 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 numberMR38400-924K4
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
Memory rank2Rx4
Heat spreaderNo
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 288-PIN ECC RDIMM KIT

Other versions of this model

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Questions about this item

Will the DDR5-4800 speed run at its rated 4800 MHz in a Supermicro H14DST-FL?

Yes, the kit is an exact-match upgrade with the precise rank, voltage and timing the board's memory controller expects, so it is recognised at full capacity and runs at its rated DDR5-4800 speed.

What does the registered ECC RDIMM design actually do for a fully populated server?

Registered buffering offloads the memory controller so every slot runs fully populated at full capacity, while ECC catches and corrects single-bit errors on the fly to stop silent data corruption and unplanned reboots.

Does the 288-pin RDIMM form factor fit the H14DST-FL DIMM slots without adapters?

Yes, the 288-pin Registered RDIMM form factor is exactly what the Supermicro H14DST-FL requires; it is not a UDIMM or SODIMM and matches the board's memory-population rules.

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