Quote Originally Posted by Geezer57
If your determine that GPU cooling is in fact your problem, you should consider an Arctic Cooling VGA Silencer (available here http://www.sidewindercomputers.com/arcovgasir3.html for about $15). I've been using several, they're very quiet and effective.
Strangely the cooler on my Radeon 9800 has started making a racket. When I boot up from cold the fan does a lot of gyrating and buzzing, after a while it quietens down a bit. Typical Stock cooling though. I may look into this one.