Background:    I did some research on this computer but somehow failed to learn of it's infamous handle, "the windtunnel". I bought it used and when I was checking it out there was a lot of background so I didn't notice the problem.

The Problem:  The noise. I like to record and do various audio things, so it's really a problem, although, considering that you can hear this thing from the bedroom down the hall with the doors closed, it's a problem no matter what.

Solutions:    So, after looking around on this site and xlr8yourmac.com I have been very inspired to see that people overcome this problem in numerous ways:

1) swap out the psu fans
2) swap out all the fans
3) do a complete ATX case conversion ala the "Killer Bee" and "Silent ATX G4" mods which are featured on this site
4) keep the case and do all kinds of stuff ala the "unreal G4"

Questions:

1) Can an atx psu be adapted to work with the MDD mobo? According to this the MDD has 24 pin pinout:
http://www.xlr8yourmac.com/tips/MDD_ps_mods/MDD_PS_Mods.html 
versus the standard 20 pin atx pin-out:
http://www.helpwithpcs.com/courses/power-supply/atx-psu-pinouts.gif

I am a total novice, but they look significantly different to me. Also, does the 25v or 28v pin do anything besides power an apple monitor? I don't plan on using an apple brand monitor.

2) If I keep the stock case, will adding more hard drives and pci cards increase the noise problem?
I have heard that this is the case, due to poor airflow.

3) Does anyone want to buy a dual 1.25 MDD? It's in great shape.... smile