wow! interesting...i have worked for authorized apple service providers, and have worked on version 1, and version 2 powermac g5's. here's an interesting note for you to consider. On the version two...in order to remove the dual processors...there are torx screws that are very inaccessible. asked apple to send the tool...they don't make one. check with mac tools, and several other hardware stores...no one had an 8 inch long 2.5mm torx tool...bummer. had to weld one. anyway...g5's are noisy...with 7 fans, how can they not be. point in case...they are powermacs...they are awesome! if you want a quiet machine...buy the imac...just remember that you can't do much upgrading (ram, hdd, and your os. If all you are doing is a little amateur video...look into a nice powermac g4. They are quieter, upgradeable, and still a very nice machine. In fact...if you are not worried about upgrading a whole lot...why don't you buy a g4 powerbook...those are really quiet, have plenty of computing power with a decent onboard video, and will probably suit your purpose. I recommend you go into an apple store, or an authorized apple service provider and check them out before you buy. good luck!