Hi everybody, I'm considering to do some fan-replacing on my Quicksilver G4 to reduce the noise. I've read the reports on xlr8yourmac.com here and here, but would like your input. Or maybe someone on these boards did the same? Everywhere I read that Papst seems to do a good job. So I was looking at their 612NGL to replace the CPU fan. And the 4412FGL to replace the big case fan. But I am not sure if these would move enough air to keep my Dual 800 running cool enough. Did Apple overdo it with the existing fans to be on the save side, so I can safely get quieter fans that move less air? Or are they just barely keeping up as it is and would it be unwise to lower it any further? Hope to get some firsthand experience from you. PS. I found that my CPU fan is a Minebea 2410ML-04W-B47 and the case fan is a Delta WFC1212B. Not much on the internet on these though.