I got a new cpu, mainboard, ram and cooler for 1 week now. The fan of the cooler is annoyingly loud for me. I can hear it through my headset on idle. My cpu temp is mostly 35c on idle. It sometimes jumps up to 40-50 and then goes back to mid 30s. The cooler is: alpenföhn ben nevis. Is there not enough thermal paste? Is 900 rpm even normal on idle? What can I do?