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Four bare green DDR5 UDIMM sticks in a kit

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 1.10V 2Rx8 UDIMM memory upgrade

SKU CH-07S5-MEXHK

A 128 GB kit of four 32 GB DDR5 4800 CL40 1.10 V 2Rx8 UDIMM modules validated for the MSI B650M Project Zero motherboard

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V

Capacity 128GB 4X32GB

  • 128GB total capacity across four 32GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • Low 1.10V operating voltage for efficient power use
  • CL40 CAS latency with 2Rx8 dual-rank organisation
  • 288-pin UDIMM form factor built for MSI B650M Project Zero motherboard

128GB DDR5 kit for MSI B650M Project Zero

This 128GB kit contains four 32GB DDR5 4800 UDIMM modules built for the MSI B650M Project Zero motherboard. It targets builders and IT teams who need maximum supported capacity on that specific platform without mixing modules.

CL40 timing and 1.10V operation

The modules run at PC5-38400 speed with a CAS latency of 40 at the standard 1.10V DDR5 voltage. Unbuffered non-ECC 2Rx8 organisation means the board sees four ranks per channel, which can affect maximum stable frequency compared to single-rank kits.

Straightforward slot installation

Each 288-pin UDIMM seats in the board's DDR5 slots like any desktop module. The four-stick population fills every slot, so the BIOS must train all ranks on first boot; if the system fails to post, reseat modules one at a time and check for a BIOS update that improves four-rank stability.

How it compares

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

Price $1,856.99
Pricier than about 67% 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 $14.51 per GB
Pricier than about 61% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineMSI Gaming Motherboard Compatible Series Memory
Model nameMSI DDR5 4800 MHz Non-ECC Unbuffered UDIMM
Part numberMD38400-328K4
Total capacity128 GB (4 × 32 GB)
Product type288-Pin DDR5 UDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Memory rank2Rx8
Power
Rated voltage1.1 V
Compatibility
Compatible systemsMSI
In the box
Included items128 GB (4 × 32 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

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Questions about this item

Will the 2Rx8 DDR5 modules need any firmware updates or reconfiguration over time?

The kit runs at 1.10 V with CL40 timings and contains no heat spreader; no firmware or reconfiguration is required after installation.

What speed ceiling appears first when the 4800 MT/s kit runs continuously at full load?

The DDR5 4800 PC5-38400 rating is the maximum JEDEC speed; sustained workloads stay at 4800 MT/s unless the motherboard downclocks for stability.

How much heat and power draw should I expect from the four 32 GB sticks running all day?

Each module operates at 1.10 V without a heat spreader, so total power stays low and thermals are handled by normal case airflow.

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