As I understand it, all CPUs slow down a little when they get hot, it's something to do with Electrons not being able to travel quite as fast once the medium is hot, or something. It's a vauge memory of something I was once told in a Microprocessor lesson. The CPU slow-down is of course quite small.
I have a total of 6 fans running in my A1200 system. Everything runs cool as a cucumber in there, and it's not actually that loud. You need to shop around for decent fans
Brian
