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NEMIX RAM

NEMIX RAM DDR5 4800 ECC RDIMM 128GB (4 x 32GB) 2Rx8 CL40 1.1V 288-pin Supermicro H14SST-G memory upgrade

SKU CH-41AX-HPXSC

128 GB DDR5-4800 registered ECC kit (4 × 32 GB, 2Rx8, CL40, 1.1 V) validated for the Supermicro H14SST-G motherboard

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered
  • 128 GB capacity in a 4 x 32 GB kit expands server memory for heavy workloads
  • DDR5-4800 speed with CL40 latency delivers rated bandwidth for demanding applications
  • Registered ECC design corrects single-bit errors and offloads the memory controller
  • 10 V operation matches platform voltage requirements for stable full-population use
  • 288-pin RDIMM form factor fits the Supermicro H14SST-G motherboard exactly

Exact-Match Upgrade for Supermicro H14SST-G

This 128GB kit delivers four 32GB DDR5 4800 RDIMMs built to the exact rank, voltage and timing the motherboard expects. Registered ECC architecture ensures every slot runs fully populated at rated speed while correcting single-bit errors before they reach production workloads. It targets administrators who need guaranteed compatibility without manual tuning.

Registered ECC Build with 288-Pin Form Factor

Each module uses a 288-pin registered design that offloads the memory controller, allowing all four DIMMs to operate at 1.1V and CL40 without signal degradation. The absence of a heat spreader keeps the profile low for dense server chassis where airflow is managed by the system. Builders who require unbuffered UDIMMs or SODIMM modules cannot use this kit.

DDR5 4800 PC5-38400 2Rx8 CL40 Specification

The memory runs at DDR5 4800 (PC5-38400) with a 2Rx8 organisation, CL40 latency and 1.1V operation, matching the board's qualified vendor list. Populating all four slots yields the full 128GB capacity at the rated data rate. Systems that demand a different speed grade, rank configuration or voltage will not recognise these modules correctly.

How it compares

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

Price $3,746.99
Pricier than about 76% of the 21,161 comparable items (median $397.99).
Total capacity 128 GB (4 × 32 GB)
Higher than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $29.27 per GB
Pricier than about 83% 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 numberMR38400-328K4
Total capacity128 GB (4 × 32 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items128 GB 4 × 32 GB DDR5 4800 MHz PC5-38400 2Rx8 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

What speed and latency does the DDR5-4800 PC5-38400 kit run at on the Supermicro H14SST-G?

The modules operate at 4800 MT/s with CL40 timings at 1.1 V, matching the board's native DDR5-4800 specification for full-rated performance.

What physical slot and form factor do these 288-pin RDIMMs require?

They need four standard DDR5 RDIMM slots (288-pin registered DIMM); the board must accept registered ECC modules, not UDIMM or SODIMM.

In which order should I populate the four 32 GB sticks on the H14SST-G?

Follow the motherboard manual's exact DIMM population sequence for 2Rx8 registered ECC kits; installing in the wrong slot order is the most common reason the system fails to recognise the full 128 GB.

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