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Square black 70x70x20mm CPU cooler fan with three-wire connector

OnlineHawk

OnlineHawk 70x70x20mm 12V .33A 3-Wire Temp Control CPU Cooler Fan

SKU CH-11RS-CX2RT

A 70 mm square CPU cooler fan with temperature control, 12 V power draw and a three-wire connection

  • TypeCase Fan
  • 70 x 70 x 20 mm compact footprint fits tight chassis spaces
  • 12 V .33 A three-wire design enables temperature-controlled speed regulation
  • 4500–7150 RPM range delivers scalable airflow for CPU cooling
  • 10 lb lightweight build reduces motherboard stress during transport
  • Da07020r12h model code ensures exact replacement identification

Compact 70 mm CPU cooler with temperature control

The OnlineHawk 70x70x20 mm fan mounts directly on a CPU heatsink and draws 0.33 A at 12 V. Its three-wire connector allows the motherboard to monitor speed and adjust voltage based on thermal load. The unit weighs 1.10 pounds and fits standard 70 mm mounting holes.

Three-wire PWM interface enables automatic fan

The bundled temperature-control function means the fan spins at lower RPM when the processor is idle and ramps up under load without user intervention. No separate controller or software is required; the motherboard handles the curve through the standard header.

Delivers 4500 to 7150 RPM airflow for low-TDP chips

At full speed the cooler moves enough air for processors with modest thermal output, such as office or embedded builds. It will not sustain high overclocks or multi-core workloads that push package power beyond the fan’s static-pressure envelope. Builders needing higher dissipation should consider larger heatsink assemblies.

Highlights

  • 70 x 70 x 20 mm compact footprint fits tight chassis spaces
  • 12 V .33 A three-wire design enables temperature-controlled speed regulation
  • 4500–7150 RPM range delivers scalable airflow for CPU cooling
  • 10 lb lightweight build reduces motherboard stress during transport
  • Da07020r12h model code ensures exact replacement identification

Specifications

TypeCase Fan

Questions about this item

Will the 3-wire temperature control connector need replacement as the fan ages?

The 3-wire connector is built into the Da07020r12h housing and carries the 12V .33A power plus the temperature-control signal; it is not a separate wear item, so no replacement is expected under normal use.

Which limit appears first during continuous operation — the 6600 RPM ceiling or the motor's thermal threshold?

The fan tops out at 6600 RPM per the M6600 rating; the temperature-control circuit modulates speed before the motor reaches its thermal limit, so the RPM ceiling is the first constraint you will see.

How much noise and heat does the 12V .33A motor produce when running all day at 4500 RPM?

At the 4500 RPM operating point the 12V .33A motor draws roughly 4 W, producing a moderate airflow hum and minimal case-temperature rise; the temperature-control feature will drop speed — and noise — when the CPU load eases.

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