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Four green DDR5 UDIMM sticks, no heat spreaders, 288-pin, 128GB kit

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 1.10V 288-pin UDIMM memory upgrade

SKU CH-KREG-0HKP5

A 128 GB DDR5 kit of four 32 GB modules at 4800 MT/s CL40 1.10 V, validated for the ASRock Z790 Lightning WiFi motherboard

  • Capacity128GB (4 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 128 GB capacity across four 32 GB modules for heavy multitasking
  • DDR5 4800 MT/s speed delivers high data throughput
  • CL40 latency at 1.10 V balances responsiveness and efficiency
  • 288-pin UDIMM form factor fits standard desktop DIMM slots
  • Validated for ASRock Z790 Lightning WiFi motherboard compatibility

Capacity and Compatibility

This 128GB kit contains four 32GB DDR5 UDIMMs rated at 4800MT/s with CL40 latency and 1.10V operation. It is built for the ASRock Z790 Lightning WiFi motherboard and uses unbuffered non-ECC modules with a 2Rx8 organisation.

Who This Suits

Builders upgrading that specific ASRock board to the full four-slot population will get the listed capacity and speed without configuration changes. Buyers who need ECC error correction or registered modules should look elsewhere, as this kit provides neither.

Deciding Specification

The 288-pin DDR5 UDIMM form factor with 1.10V voltage and CL40 timing at 4800MT/s is the single detail that determines whether the kit will install and run on the target motherboard.

Highlights

  • 128 GB capacity across four 32 GB modules for heavy multitasking
  • DDR5 4800 MT/s speed delivers high data throughput
  • CL40 latency at 1.10 V balances responsiveness and efficiency
  • 288-pin UDIMM form factor fits standard desktop DIMM slots
  • Validated for ASRock Z790 Lightning WiFi motherboard compatibility

Specifications

BrandNEMIX RAM
SeriesASRock Gaming Motherboard Compatible Series Memory
ModelASRock DDR5 4800MHZ Non-ECC Unbuffered UDIMM
Part NumberMD38400-328K4
Capacity128GB (4 x 32GB)
SpeedDDR5 4800 (PC5 38400)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASRock
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 UDIMM
Rank2Rx8
FeaturesDDR5 Non-ECC Unbuffered UDIMM Motherboard Compatible
Package Content128GB (4X32GB) DDR5 4800MHZ PC5-38400 2Rx8 1.1V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will the 288-pin DDR5 UDIMM modules fit the four DIMM slots on the ASRock Z790 Lightning WiFi motherboard?

Yes, the kit provides four 288-pin DDR5 UDIMM modules designed for the four DIMM slots on the ASRock Z790 Lightning WiFi motherboard.

What is the correct slot order when installing all four 32GB modules on this motherboard?

Populate the two slots of the primary memory channel first, usually labelled DDR5_A1 and DDR5_B1, then add the remaining two modules to the second channel slots.

When should the 2Rx8 DDR5 modules be replaced?

Replace a module only if a memory diagnostic reports persistent errors on that specific stick; otherwise the kit is rated for continuous operation at 1.10V.

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