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

NEMIX RAM

NEMIX RAM 64GB (2x32GB) DDR5 4800 CL40 1.1V 288-Pin UDIMM memory upgrade

SKU CH-FSFR-S8MJ6

64 GB dual-channel DDR5 kit running at 4800 MHz CL40 and 1.1 V for ASRock Z790 boards

  • Capacity64GB (2 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V
  • 64 GB total capacity from two 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.1 V operating voltage
  • 288-pin unbuffered UDIMM form factor for desktop use
  • 2Rx8 dual-rank organisation using major OEM DRAM chips

64GB DDR5 Kit for ASRock Z790

This 64GB kit contains two 32GB DDR5 modules built for the ASRock Z790 Lightning WiFi motherboard. It runs at 4800 MT/s with CL40 latency at 1.1V. The unbuffered non-ECC UDIMMs use major OEM chips from Samsung, Micron or Hynix.

Ideal for Z790 builds needing 64GB.

Builders upgrading an ASRock Z790 board to 64GB with standard DDR5 will find this kit validated for that platform. Systems requiring ECC error correction or registered modules cannot use these unbuffered non-ECC sticks.

DDR5 4800 CL40 1.1V 288-pin UDIMM spec

The decisive figure is the DDR5 4800 CL40 1.1V 288-pin UDIMM specification. Your motherboard must support this exact speed, latency, voltage and pin layout for the kit to function correctly.

Highlights

  • 64 GB total capacity from two 32 GB modules
  • DDR5 4800 speed rated at PC5-38400 bandwidth
  • CL40 CAS latency at 1.1 V operating voltage
  • 288-pin unbuffered UDIMM form factor for desktop use
  • 2Rx8 dual-rank organisation using major OEM DRAM chips

Specifications

BrandNEMIX RAM
SeriesASRock Gaming Motherboard Compatible Series Memory
ModelASRock DDR5 4800MHZ Non-ECC Unbuffered UDIMM
Part NumberMD38400-328K2
Capacity64GB (2 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 Content64GB (2X32GB) DDR5 4800MHZ PC5-38400 2Rx8 1.1V CL40 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will this DDR5 4800 kit work alongside older DDR5 modules I keep in the other slots?

The kit is DDR5 4800 CL40 1.10 V 2Rx8; mixing speeds or ranks can force the board to run all sticks at the slowest common setting, so populate the remaining slots with identical spec modules for best stability.

How do I confirm the 64 GB kit is running at 4800 MT/s and CL40 after install?

Open the BIOS or a tool like CPU-Z and verify the memory frequency reads 4800 MT/s (PC5-38400) with CAS latency 40 at 1.10 V.

What exactly ships in the box and is anything else required?

The package contains two 32 GB 288-pin DDR5 UDIMMs — no heat spreaders, no extra cables or brackets; the motherboard and a DDR5-compatible CPU are the only other items needed.

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