I'm this problem for a week or so. I have been using this CPU cooler (Coolermaster Seidon 120XL) for about 3 weeks.
http://www.amazon.com/Cooler-Master-Seidon-120XL-Push-Pull/dp/B00B20OYUE/ref=sr_sp-atf_title_1_1?ie=UTF8&qid=1407012050&sr=8-1&keywords=coolermaster+seidon+120xl
At times for apparently no reason the fans speed up to 2000 rpm+, and this in spite of my setting the maximum duty ratio to as low as 40% in bios. Sometimes they slow down again, other times they won't unless the PC is turned off and restarted. The whine at that speed is horrible. I installed the fans correctly; they are plugged into the CPU fan header. And there is no temperature problem. These speeds are attained at near idle CPU with core temperatures of 31-32 degrees Celsius.
What could the problem be?
http://www.amazon.com/Cooler-Master-Seidon-120XL-Push-Pull/dp/B00B20OYUE/ref=sr_sp-atf_title_1_1?ie=UTF8&qid=1407012050&sr=8-1&keywords=coolermaster+seidon+120xl
At times for apparently no reason the fans speed up to 2000 rpm+, and this in spite of my setting the maximum duty ratio to as low as 40% in bios. Sometimes they slow down again, other times they won't unless the PC is turned off and restarted. The whine at that speed is horrible. I installed the fans correctly; they are plugged into the CPU fan header. And there is no temperature problem. These speeds are attained at near idle CPU with core temperatures of 31-32 degrees Celsius.
What could the problem be?
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