I'm not the best judge, but these are really quiet fans. I can hear the ones in my laptop, but don't notice Fan SHIM at all. We've had a couple of customers who

I'm not the best judge, but these are really quiet fans. I can hear the ones in my laptop, but don't notice Fan SHIM at all. We've had a couple of customers who have, but a replacement fan has been quiet- guessing it's a tolerance issue with the plastics.