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Two green DDR5 UDIMM sticks without heat spreaders, 288-pin, 64GB kit

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 CL40 1.1V UDIMM memory upgrade

SKU CH-WH0W-VTRSE

A 64 GB dual-channel DDR5 kit running at 4800 MT/s with CL40 latency and 1.1 V operation for ASRock Z790 and B650 motherboards

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Buffer typeUnbuffered
  • Rated voltage1.1 V
  • 64GB total capacity across two 32GB modules for high-density desktop upgrades
  • DDR5 4800 speed rated at PC5-38400 for fast data throughput
  • CL40 CAS latency at 1.1V standard voltage for efficient operation
  • 288-pin UDIMM form factor with 2Rx8 rank organisation for broad motherboard compatibility
  • Tested compatible with ASRock Z790 and B650 LiveMixer motherboards

Targeted DDR5 kit for ASRock Z790

This 64 GB kit contains two 32 GB unbuffered UDIMMs rated at DDR5 4800 with CL40 timings. It is built for desktop PCs that use the specified ASRock motherboards and need a straight-forward capacity increase. No heat spreaders are included, keeping the modules low-profile for tight CPU cooler clearances.

Standard 288-pin DDR5 UDIMM form factor

Each module uses a 2Rx8 organisation and runs at the JEDEC 1.10 V baseline, so no manual voltage tuning is required. The plain green PCB fits any desktop slot wired for DDR5, and the dual-rank layout helps fill four-channel controllers efficiently. Installation follows the usual UDIMM procedure described in the motherboard manual.

Two-module kit validated for the listed ASRock

The package delivers exactly the 64 GB (2 x 32 GB) configuration tested for compatibility with the Z790 LiveMixer and B650 LiveMixer broadcasting motherboards. Buyers who need ECC error correction, registered signalling, or speeds above the 4800 MT/s JEDEC base should look for a different module type.

How it compares

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

Price $932.99
Pricier than about 60% of the 21,161 comparable items (median $397.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $14.58 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 numberMD38400-328K2
Total capacity64 GB (2 × 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 items64 GB (2 × 32 GB) DDR5 4800 MHz PC5-38400 2Rx8 1.1 V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

What DDR5 speed does this 64 GB kit run at, and what does the PC5-38400 rating mean for bandwidth?

The kit is rated DDR5 4800 (PC5-38400), so the standard's peak transfer rate is 38400 MB/s; actual throughput depends on the motherboard's memory controller and BIOS settings.

Will these 288-pin UDIMMs fit in the four DIMM slots on my ASRock Z790 or B650 LiveMixer board?

Yes, each module is a standard 288-pin DDR5 UDIMM and the kit contains two 32 GB sticks, so they install directly into any DDR5 desktop DIMM slot on those motherboards.

Do I need to enable XMP or EXPO in the BIOS to reach the rated CL40 4800 speed, or will it run at that speed automatically?

DDR5 defaults to 4800 MT/s at 1.1 V without any profile; the modules will run at CL40 4800 automatically, though you can still enable an XMP/EXPO profile if your board offers one for tighter timings.

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