Hey all! I have been looking to upgrade from my PowerMac G5 to a refurb iMac (20-inch, 2.4GHz, 1 gig RAM). My parents have offered to pay half but first I think my dad needs a little convincing as to why the iMac is better than what I have now. My PowerMac is in my room in front of a window and I keep the tower on top of my desk (for lack of any other room under my desk). Since our upstairs AC is busted and the tower gets flooded with sun from my window, the fans are often running really quickly and my machine gets super loud, which my dad HATES. So I'm wondering- how loud is an iMac? Is there any difference in the loudness based on screen size or processor? (IE- 20" vs 24" or 2.4 GHz vs 2.66GHz.) Thanks for reading, and thanks in advance for helping me out!