We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
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

  • 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 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.

How it compares

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

Price $1,880.99
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 $14.70 per GB
Pricier than about 61% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

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

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.

More in Model-Specific Memory Upgrades

Similar items