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Four green DDR5 UDIMM modules without heat spreaders

NEMIX RAM

NEMIX RAM 128GB (4x32GB) DDR5 4800 CL40 1.1V UDIMM for Gigabyte B650 AORUS Elite AX memory upgrade

SKU CH-22ZB-NBXVZ

A 128 GB DDR5 kit of four 32 GB UDIMM modules running at 4800 MT/s with CL40 latency at 1.1 V, validated for the Gigabyte B650 AORUS Elite AX motherboard

  • Capacity128GB (4 x 32GB)
  • SpeedDDR5 4800 (PC5 38400)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.10V

Capacity 128GB 4X32GB

  • 128 GB total capacity with four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400
  • CL40 CAS latency at 1.1 V operating voltage
  • 288-pin unbuffered non-ECC UDIMM form factor
  • Validated for Gigabyte B650 AORUS Elite AX motherboard

128GB DDR5 Kit for Gigabyte B650 AORUS Elite AX

This 128GB kit contains four 32GB DDR5 UDIMM modules built for the Gigabyte B650 AORUS Elite AX motherboard. It targets desktop users who need maximum memory capacity for heavy multitasking or content creation. The modules are non-ECC and unbuffered for standard desktop operation.

DDR5 4800 CL40 at 1.1V

The decisive specification is the DDR5 4800 speed with CL40 latency at 1.1V across all four 2Rx8 modules. This combination determines whether the kit matches the motherboard's supported memory profile for stable operation. The 288-pin UDIMM form factor ensures physical compatibility with the board's four DIMM slots.

No heat spreaders included

The kit ships without heat spreaders, leaving the memory chips exposed for direct airflow from case fans. This reduces overall module height for tighter cooler clearances but relies on chassis ventilation for thermal management. No additional software or accessories are bundled with the memory modules.

Highlights

  • 128 GB total capacity with four 32 GB modules
  • DDR5 4800 speed rated at PC5-38400
  • CL40 CAS latency at 1.1 V operating voltage
  • 288-pin unbuffered non-ECC UDIMM form factor
  • Validated for Gigabyte B650 AORUS Elite AX motherboard

Specifications

BrandNEMIX RAM
SeriesGigabyte Gaming Motherboard Compatible Series Memory
ModelGigabyte 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 SystemGIGABYTE
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

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Questions about this item

What does the DDR5 4800 speed mean once the kit is installed in the Gigabyte B650 AORUS Elite AX?

The four 32 GB modules operate at 4800 MT/s with CL40 timings at 1.1 V, giving the board 128 GB of total capacity at the standard JEDEC DDR5 4800 data rate.

Which interface standard does this memory use and what does it limit in practice?

The modules use the 288-pin DDR5 UDIMM interface, which is keyed for DDR5-only motherboards and runs at the 1.1 V JEDEC voltage defined for this speed grade.

What physical space and slot layout are needed to fit all four sticks?

The kit contains four 288-pin UDIMMs in a 2Rx8 configuration without heat spreaders, so the board must provide four standard DDR5 DIMM slots with normal clearance.

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