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Old 07-12-2019, 06:03 PM
jonnyguru jonnyguru is offline
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Originally Posted by corsican View Post
alrite then can someone @Corsair confirm if the fan's triggered only by ambient temp or by any of the other sensors too? (for those who enable 0 fan mode)
There's a fan controller MCU that uses a combination of inputs to determine if/when the fan should turn on and for how long.

Load, temperature and duration. If the temperatures are high, the fan turns on. If the load is high, the fan turns on. If the fan turns on due to temperature; depending on how long the fan has to run to bring temperatures down, the fan may run a few seconds after temperatures come down to a desirable temperature to avoid the fan immediately ramping back up again too soon.

It's a more expensive solution as you're adding an MCU and you need op-amps to measure the output current, but it yields the most desirable effect.

Most fan controllers only use a thermistor and only change the fan speed based on temperature, so when they advertise that the fan increases at a particular load, they're using an "example" of how the fan would behave at a particular ambient temperature (typically 25C).
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