Hello, I was in a discussion with a Friend regarding cooling systems for computers. We were discussing different air cooling methods for CPUs and he claimed that if the fan was moving at high enough RPMs that the heat transfer from heat sink to the surrounding air would drop in efficiency. He claimed that if the air was moving fast enough that the heat would not have time to transfer to the air moving over it. I have been building computers for many years and I thought I was fairly versed in the design and function of the various systems but I have to admit I have never heard of anything like this. The nearest I could think of is how air heats up when you compress it but we are not talking about air compression in this case, we are talking about standard fans moving air through a grated piece of aluminum. If anyone has information about this, I would love to hear it. Frankly the concept seems very confusing.