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Eight green circuit boards with black chips and gold contacts in a clear plastic tray

NEMIX RAM

NEMIX RAM 128GB (8x16GB) DDR4 3200 CL22 1.2V 288-Pin UDIMM Kit for ASUS Prime X299-A II

SKU CH-4FRX-HK0XS

Eight 16 GB DDR4 3200 CL22 unbuffered UDIMMs at 1.2 V, validated for the ASUS Prime X299-A II motherboard

  • Capacity128GB (8 x 16GB)
  • SpeedDDR4 3200 (PC4 25600)
  • ECCNo
  • Buffered/RegisteredUnbuffered
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • Voltage1.20V
  • 128GB total capacity across 8 modules of 16GB each
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • CL22 CAS latency at 1.20V operating voltage
  • 288-pin UDIMM form factor for desktop motherboards
  • Tested compatible with ASUS Prime X299-A II motherboard

128GB DDR4 kit for ASUS Prime X299-A II

This NEMIX RAM kit delivers 128GB of DDR4 memory across eight 16GB UDIMM modules. It is built for the ASUS Prime X299-A II motherboard and suits workstations that need high capacity for virtualisation, rendering or large datasets. The modules run at 3200 MT/s with CL22 latency at 1.20V.

Eight-slot population on X299 platform

Populating all eight DIMM slots on the X299 board uses the quad-channel architecture fully and leaves no free slots for future expansion. The unbuffered non-ECC design keeps the memory controller simple and avoids registered-DIMM compatibility constraints. Each module is a single-rank 1Rx8 device using major-brand DRAM from Samsung, Micron or Hynix.

Low-voltage operation without heat spreaders

The kit operates at the standard DDR4 voltage of 1.20V, so power draw stays modest even with all eight sticks installed. No heat spreaders are fitted, which reduces weight and avoids clearance issues with large CPU coolers, but it also means the modules rely on case airflow for cooling. Under sustained load the bare PCBs run warmer than spreader-equipped alternatives, so adequate chassis ventilation is recommended.

Highlights

  • 128GB total capacity across 8 modules of 16GB each
  • DDR4 3200 speed rated at PC4-25600 bandwidth
  • CL22 CAS latency at 1.20V operating voltage
  • 288-pin UDIMM form factor for desktop motherboards
  • Tested compatible with ASUS Prime X299-A II motherboard

Specifications

BrandNEMIX RAM
SeriesASUS Gaming Motherboard Compatible Series Memory
ModelASUS DDR4 3200MHZ Non-ECC Unbuffered UDIMM
Part NumberMD25600-618K8
Capacity128GB (8 x 16GB)
SpeedDDR4 3200 (PC4 25600)
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor OEM Samsung, Micron, Hynix
Voltage1.20V
Compatible SystemASUS
CAS LatencyCL22
Heat SpreaderNo
Type288-Pin DDR4 UDIMM
Rank1Rx8
FeaturesDDR4 Non- ECC Unbuffered UDIMM Motherboard Compatible
Package Content128GB (8X16GB) DDR4 3200MHZ PC4-25600 1Rx8 1.2V CL22 288-PIN Non-ECC Unbuffered UDIMM KIT

Questions about this item

Will the CL22 latency become a bottleneck during long rendering jobs?

CL22 is the rated CAS latency at 3200 MT/s; sustained workloads run at this timing unless the motherboard applies tighter settings.

How much heat do eight 1.2 V modules produce when the system runs all day?

Each 16 GB UDIMM operates at 1.20 V without a heat spreader; total power draw scales with all eight sticks active under load.

Does the ASUS Prime X299-A II need a specific BIOS version to recognise the full 128 GB kit?

The kit is validated for the ASUS Prime X299-A II; the motherboard must support 8 × 16 GB DDR4 3200 UDIMM population.

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