I've been reading a lot of different stories of people using three pin cpu fans on boards with a 4 pin connector. 99% of the time the reports are that it "just works," notwithstanding the rare reports of someone managing to stick it in the 2-4 pins.
But on one site I read "some PC systems need to detect a CPU fan speed signal or they will automatically shut down" and it got me worried. If I'm reading explanations right, pin 3 detects speed and pin 4 regulates speed.
My question, and its probably a dumb one, is does this mean the motherboard needs to detect speed (which a 3-pin connector will allow) or that it needs to have a signal saying it can regulate speed (the fourth pin).
Just getting ready to start a build with an A10-6800K and a GA-F2A88XM-D3H and my plan was to use an aftermarket cooler with a 3-pin connector (and a speed control knob that goes in a slot on the back), and I want to make sure that there's not some non-trivial chance the motherboard is going to get spooked by this configuration and refuse to work. If it's a problem I can stick with the stock cooler, which is four pin.
But on one site I read "some PC systems need to detect a CPU fan speed signal or they will automatically shut down" and it got me worried. If I'm reading explanations right, pin 3 detects speed and pin 4 regulates speed.
My question, and its probably a dumb one, is does this mean the motherboard needs to detect speed (which a 3-pin connector will allow) or that it needs to have a signal saying it can regulate speed (the fourth pin).
Just getting ready to start a build with an A10-6800K and a GA-F2A88XM-D3H and my plan was to use an aftermarket cooler with a 3-pin connector (and a speed control knob that goes in a slot on the back), and I want to make sure that there's not some non-trivial chance the motherboard is going to get spooked by this configuration and refuse to work. If it's a problem I can stick with the stock cooler, which is four pin.
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