how to control cpu fan speed in dell laptop xps l502x

If you have it on CPU FAN motherboard header you may be able to change the curve in BIOS.Īlceryes is absolutely correct. If it's your CPU fan that's making the noise you'll need to adjust that curve as well. So, in the fusion software adjust the fan curve a bit higher.

This requires monitoring of your CPU temp to make sure it's not getting too hot. To fix this, you could raise that threshold so that it doesn't get tripped until your CPU really heats up. I believe some motherboards have a delay once a threshold has been tripped to prevent this spin up and spin down behavior but when you are experiencing is very common. However, when your fan(s) speed up, they cool your CPU down below the temp threshold so your fan(s) then spin down. When you hit a temp threshold, your fan(s) speed up to the next RPM level, as dictated by the fan curve you set. First thing to find out is which fans are 'pulsing'. To verify, grab the inner tube from a paper towel roll, put one end against your ear, and move the other end around to all the fans in question to see which one(s) it is. I'm assuming that its mainly your CPU fan that you hear pulsing. So, if the pulsing is what I think it is, it's totally normal.

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How to control cpu fan speed in dell laptop xps l502x