Originally posted by: mazeroth
Ummm...I think you have it wrong. Passively cooled are only cooled by the heatsinks. Actively cooled are cooled by the fan + heatsink. Hence, active = the activity of the fan.
no, physics textbooks say i'm right. internet fanboys have it wrong, have for years.
think about it. if you have a fan blowing at a heat sink (which is two words, btw) it really isn't using any different heat transfer mechanism than if you didn't have a fan blowing at the heat sink. it is still heat just moving naturally from the hot heat sink to the cooler air via conduction. in reality, the fan isn't cooling a damn thing, it's just stirring air around.
but how does an air conditioner work? it uses the fact that when gases are pressurized they heat up, and when they expand they cool down (like when using air duster, the can gets cold), and can, notably, move the heat against the temperature gradient. the system is actually doing something to cool.