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Small black square cooling fan with four power wires

Ruth's sister

Ruth's sister CHB8012ES-AP 8020 12V .44a four wire PWM internal power cable

SKU CH-E5FE-1SP8R

An 8 cm internal fan with 12 V, 0.44 A PWM speed control for chassis or CPU cooling

  • Four-wire PWM enables precise speed control
  • 12 V .44 A rating suits standard chassis headers
  • 8020 model delivers high airflow for cooling
  • Temperature control adjusts fan speed to system load

Ruth's sister CHB8012ES-AP 8020 12V PWM Fan

The Ruth's sister CHB8012ES-AP 8020 is a 12V internal cooling fan designed for chassis or CPU thermal management. It connects via a four-wire PWM interface that allows the motherboard to regulate speed based on temperature feedback. The unit draws 0.44 A and suits builders who need active airflow for standard desktop cooling tasks. It is not intended for liquid-cooling radiators or specialised high-static-pressure arrays.

Sustained Load Behaviour

Under continuous operation the temperature-control loop adjusts RPM to match thermal demand rather than running at a fixed maximum. The 0.44 A current draw remains stable during extended use so power delivery stays predictable. Acoustic output rises only when the sensor calls for higher airflow. The fan serves workloads that generate steady heat over long sessions.

Highlights

  • Four-wire PWM enables precise speed control
  • 12 V .44 A rating suits standard chassis headers
  • 8020 model delivers high airflow for cooling
  • Temperature control adjusts fan speed to system load

Specifications

No published specifications for this item yet.

Questions about this item

How loud and hot does the CHB8012ES-AP 8020 get when running all day?

The 12 V .44 A four-wire PWM fan adjusts speed with temperature control, so noise and heat vary with load rather than running at a fixed maximum.

What connector must my motherboard or fan controller provide for the four-wire PWM cable?

A standard 4-pin PWM header supplies the 12 V power, ground, tachometer signal and PWM control line this fan requires.

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