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Four green DDR5 UDIMM sticks without heat spreaders

NEMIX RAM

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

SKU CH-EARG-Y9SZ2

Four 32 GB DDR5 UDIMM modules running at 4800 MT/s with CL40 latency and 1.1 V operation for compatible ASRock Z790 motherboards

  • 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

  • 128 GB total capacity from four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.1 V operating voltage
  • 288-pin UDIMM form factor with 2Rx8 dual-rank organisation
  • Validated for ASRock Z790 Taichi series motherboards

128GB DDR5 4800 kit for ASRock Z790

This 128GB kit contains four 32GB DDR5 4800 UDIMM modules built for ASRock Z790 Taichi, Taichi Carrara and Taichi Lite motherboards. Each stick runs at 1.1V with CL40 latency and a 2Rx8 layout. The kit is new and unbuffered, non-ECC memory designed for desktop PC upgrades.

Not for laptops or boards needing ECC

This kit suits desktop builders upgrading compatible ASRock Z790 boards with four UDIMM slots. It will not work in laptops, servers or any system that requires registered or ECC memory. Buyers needing heat spreaders or lower CAS latency should look elsewhere.

DDR5 4800 288-pin UDIMM interface

The modules use a standard 288-pin DDR5 UDIMM connector operating at 4800 MT/s (PC5-38400). This single specification determines whether the kit fits your motherboard and memory controller. Confirm your board supports DDR5 4800 unbuffered non-ECC UDIMMs before purchase.

How it compares

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

Price $1,754.99
Pricier than about 66% 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 $13.71 per GB
Pricier than about 60% 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

Other versions of this model

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Questions about this item

Should I choose the 4 × 32 GB kit or a different capacity for my ASRock Z790 board?

This kit provides 128 GB in four 32 GB modules, filling all four DIMM slots on Z790 Taichi, Carrara and Lite boards for maximum supported capacity.

What does DDR5 4800 with CL40 actually deliver in a desktop system?

The modules run at 4800 MT/s with 40-cycle latency at 1.10 V, giving standard JEDEC bandwidth without overclocking.

Will the 288-pin UDIMM interface limit speed or capacity on my motherboard?

The 288-pin DDR5 UDIMM form factor is the native desktop standard; the board's memory controller caps transfer rate and total capacity, not the module connector.

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