I'm purchasing a new Athlon XP, and I wanted a new HS/fan to go with it. I want to purchase the Alpha 8045 Whisper Kit from 2cooltek.com, which comes with a Panaflo 24CFM / 21dba 80mm fan. But scanning these forums, I see most people have attached a more powerful fan, like 30CFM or 40CFM. So is 24CFM good enough? How much temperature difference would there be from the different Panaflo fans? I'm pretty sure I won't do any overclocking, but if I do, I'd probably play it on the safe side. If I do need a bigger fan, then I'd have to get the fan from somewhere else since 2cooltek.com doesn't carry any other Panaflo 80mm fans.