360-internal cooler (in Off-topic)

hello, does anyone know if the internal cooler really works. i have read many reviews about it and they seem to be 50/50 where half says its really good and it works then the other half says its a waste of money and it doesnt work. i even read one review where someone said it made it worse. so i was just wondering if anyone has one or know if they really work or not.

i work over at Fry's Electronics and i recommend it just the majority of the returns on the 360 is since they complain about it freezing and once we have them retry it with that it works and they end up not returning it!