I am looking for a new heatsink since I want my computer to be quieter. Right now I have a GlobalWin CAK38 which is rated 46.5dba. I am looking for a new heatsink with a much quieter fan but can be used on an Athlon XP 1800+ and possibly the new Thoroughbreds. I also am looking for quieter case fans. I have 3 80mm fans and one 60mm fans. The quietest fans I can find are the Vantec 80mm (21.0 dba) and 60mm (20.0 dba) Stealth Fans. Are there any quieter than that? And what is a good and quiet heatsink? Thanks.