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Two green DDR5 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 32GB (2x16GB) DDR5 4800 CL40 1.1V UDIMM ASRock Z790 PG Riptide

SKU CH-64BF-GE8K2

32 GB dual-channel DDR5 kit at 4800 MT/s with CL40 latency and 1.1 V operation for the ASRock Z790 PG Riptide motherboard

  • Capacity32GB (2 x 16GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 32 GB kit (2 × 16 GB) doubles desktop memory capacity
  • DDR5 4800 speed with CL40 latency for responsive system performance
  • Low 1.10 V operation reduces power draw and heat
  • Validated for ASRock Z790 PG Riptide motherboard compatibility
  • Built with major-brand Samsung, Micron or Hynix DRAM chips

ASRock Z790 PG Riptide Kit

This 32GB kit contains two 16GB DDR5 UDIMMs validated for the ASRock Z790 PG Riptide motherboard. The modules run at 4800 MT/s with a CL40 latency at 1.1V. They use major OEM chips and are non-ECC unbuffered.

Builders Matching This Board

The kit suits anyone upgrading or populating an ASRock Z790 PG Riptide system with guaranteed compatibility. Buyers needing ECC error correction or registered modules should look elsewhere, as this kit provides neither.

PC5-38400 Speed Rating

The decisive spec is the PC5-38400 rating, which confirms DDR5 4800 operation for this platform. Systems requiring a different data rate or voltage will not accept these modules.

Highlights

  • 32 GB kit (2 × 16 GB) doubles desktop memory capacity
  • DDR5 4800 speed with CL40 latency for responsive system performance
  • Low 1.10 V operation reduces power draw and heat
  • Validated for ASRock Z790 PG Riptide motherboard compatibility
  • Built with major-brand Samsung, Micron or Hynix DRAM chips

Specifications

BrandNEMIX RAM
SeriesASRock Gaming Motherboard Compatible Series Memory
ModelASRock DDR5 4800MHZ Non-ECC Unbuffered UDIMM
Part NumberMD38400-618K2
Capacity32GB (2 x 16GB)
SpeedDDR5 4800 (PC5 38400)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.10V
Compatible SystemASRock
CAS LatencyCL40
Heat SpreaderNo
Type288-Pin DDR5 UDIMM
Rank1Rx8
FeaturesDDR5 Non-ECC Unbuffered UDIMM Motherboard Compatible
Package Content32GB (2X16GB) DDR5 4800MHZ PC5-38400 1Rx8 1.1V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will these 288-pin DDR5 modules fit the four slots on my ASRock Z790 PG Riptide?

Yes — the kit is a 288-pin DDR5 UDIMM and the board uses the same DDR5 slot layout, so each 16 GB stick seats directly in any of the four DIMM sockets.

Do I need to enable XMP or EXPO in the BIOS after inserting the sticks, or will they run at 4800 CL40 automatically?

The modules are rated 4800 MT/s CL40 at 1.10 V JEDEC standard; they will boot at that speed without any manual profile, though you can still enable XMP if the board offers a higher profile.

Since there is no heat spreader, will I need extra airflow or a replacement kit later?

The bare PCB runs at standard 1.10 V DDR5 voltage; normal case airflow is sufficient, and the modules carry a lifetime replacement warranty if a stick ever fails.

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