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Four bare green DDR5 UDIMM sticks in a row

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 1.1V 288-Pin UDIMM memory upgrade

SKU CH-H4C0-KH2KH

A 128 GB DDR5 kit of four 32 GB unbuffered UDIMMs at 4800 MT/s CL40 and 1.1 V for ASRock Z790 and B650 LiveMixer boards

  • Total capacity128 GB (4 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 MT/s speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.1 V operating voltage
  • 288-pin UDIMM form factor fits standard desktop DIMM slots
  • Validated for ASRock Z790 and B650 LiveMixer motherboards

128 GB DDR5 kit for ASRock motherboards

This 128 GB kit contains four 32 GB DDR5 4800 CL40 modules built for ASRock Z790 and B650 LiveMixer boards. The unbuffered non-ECC UDIMMs run at 1.1 V and use major OEM chips from Samsung, Micron or Hynix. No heat spreaders are fitted.

Who this suits and who it does not

Builders upgrading compatible ASRock desktops to 128 GB of DDR5 will find a validated match. Systems that require registered or ECC memory cannot use these modules. Users needing lower latency than CL40 or higher frequencies than 4800 MT/s should look elsewhere.

DDR5 4800 CL40 1.1 V specification

The decisive figure is the DDR5 4800 CL40 timing at 1.1 V. If the motherboard QVL lists PC5-38400 2Rx8 unbuffered UDIMMs at this voltage, the kit will work. Any board limited to slower speeds, different voltages or registered DIMMs will not accept this memory.

How it compares

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

Price $1,883.99
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 $14.72 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 lineASRock Gaming Motherboard Compatible Series Memory
Model nameASRock 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 systemsASRock
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

Questions about this item

Do I need four free 288-pin DDR5 UDIMM slots to install this 128 GB kit?

Yes, the kit contains four 32 GB modules and each one occupies a single 288-pin DDR5 UDIMM slot on the motherboard.

Will these 4800 MT/s CL40 modules run stably on my ASRock Z790 or B650 LiveMixer board?

The kit is validated for ASRock Z790 LiveMixer and B650 LiveMixer motherboards at the rated 4800 MT/s speed and CL40 latency.

How can I confirm the memory is operating at 4800 MT/s with CL40 timings after installation?

Check the memory speed and latency in the BIOS or with a tool such as CPU-Z; both should report 4800 MT/s and CL40 for each module.

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