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Compact black 40mm PWM liquid cooler with radiator and four-pin connector

Heat River Tech LTD

Heat River Tech LTD DS04020R12MP 023 40mm PWM liquid cooler 12V 6000 RPM

SKU CH-A5B2-VEK1F

A 40 mm PWM liquid-cooling fan runs at 6000 RPM on 12 V power

  • Compact 40 × 40 × 20 mm design fits tight builds
  • 12 V PWM control adjusts speed to thermal load
  • 6000 RPM maximum airflow for focused cooling
  • Low 0.15 A draw keeps power use minimal

40 mm liquid cooler for tight builds

This Heat River Tech LTD DS04020R12MP 023 unit measures 40 by 40 by 20 mm and runs on 12 V DC at 0.15 A. The four-pin PWM fan spins up to 6000 RPM to move coolant through the compact radiator. It is built for small-form-factor PCs that cannot accommodate larger liquid-cooling hardware.

Suited for custom loops in ITX cases

Builders assembling miniature workstations or embedded systems will appreciate the slim 20 mm thickness and standard PWM control. Buyers who need higher thermal capacity or quieter operation at lower speeds should look at larger radiator kits instead.

Helstu kostir

  • Compact 40 × 40 × 20 mm design fits tight builds
  • 12 V PWM control adjusts speed to thermal load
  • 6000 RPM maximum airflow for focused cooling
  • Low 0.15 A draw keeps power use minimal

Tæknilýsing

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How loud does the 40 mm fan run at its maximum 6000 RPM speed?

The 40 mm fan spins up to 6000 RPM via PWM control, so noise increases with speed; at full RPM it will be audible in a quiet room.

My motherboard only has 3-pin fan headers — can I still use this cooler's 4-pin PWM connector?

Yes, the 4-pin PWM plug fits a 3-pin header; the fan will run at a fixed 12 V speed without PWM control.

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