So the warranty on my Quicksilver G4 went up.... I think about three or so months ago. Which is fine by me, because, in actuality, I have been waiting for this moment. My G4 800 was loud as all hell. I hated it, I like to leave it on at night when I am running SETI, streaming my music to my friends across the nation, and with the computer across the room from me, it gets to be a real pain, and I couldn't get to sleep. So , I looked around my machine for various things that could effect the noise level, and fixed them. Some of these methods may/may not have been mentioned, so I will mention them anyways to help other people. Power Supply Fan. Now, this has been mentioned many times before. The frame of the power supply does not match up wth the lines on the case. No biggie. First you have to do is get a hex wrench to remove the back panel. Now be careful, when you remove the back panel, some of it sticks to the metal case. Just remove it slowly, and when it finally gets stuck on the locking mechanism, just try and squeeze it over the lock. Be patient, and it will all come apart. Now, get some tin snips, and snip away at the metal grate protecting the power supply fan, so the fan is completely exposed. Put the plastic panel back on, and for now, you are good to go. Second, older model G4's, such as the Graphite ones, and I believe the Blue and White G3, have the large 120 mm case fan blowing into the case. On the Quicksilver, it sucks air out of the case. The processor fan also blows air out on previous models, and sucks air in on newer models. I noticed the 120mm seemed to blow out some hot air, a lot of it in fact. And when I would often times open the case after the computer was running, the Stock ATi Video card got extremely hot, for it has no fan over the heatsink like newer cards do. Also, having two hard drives stacked on top of one another created a lot of heat, more than the processor. So, here was my solution. To switch the processor fan, unscrew the two screws on the back part of the case, near the ports. Then, remove the black fan shroud, this shouldn't be too hard. This way, you can avoid removing the heat sink assembly. Just unscrew the fan, and turn it around so it now blows air out of the computer. Now with the 120 mm fan, Remove the hard drive sled, and remove the two screws attaching the metal fan housing from the frame. Then remove the four screws attaching the fan to the housing. The finger guard, due to it's shape, creates a lot of noise. (the metal grate that is part of the fan housing) To reduce this noise, cut this out as well. You can replace it with a newer finger guard, one of those metal wire ones, but my fingers are never inside my computer when it is on, so losing the finger guard is not an issue. Reverse the fan so it now will blow air into the computer. Hopefully, once you put everything back together, your computer should be loads quieter. You can hear each hard drive spin up and down. Adding ram also makes your computer quieter as well. Also, a lot of cold air gets blown out of the computer. For those of you with PCI cards, having the 120 mm fan blow over these cards is better than having the 120mm fan try to suck air over them. If your warranty is up, this is perhaps, the best way for you to modify your system until a verax kit comes out for the QuickSilver G4s. I apologize for there not being any pictures, but my .mac account expired and I have no html skills to make a site. If somebody would like to house the pictures on how to do all this, I will be more than happy to email them to you, and let you create a page about it all. i hope this helps... any questions? IM me at Jihad the Movie, or post, whichever works for you.