Seal, could you provide more details of your mac mini mods, especially with regards to the cooling system?
sure, er the only major mod was the overclocking, which requires re-soldering of the mini's motherboard PCB, its quite tricky stuff and not for the faint hearted, as i already said, it invalidates your warranty instantly. It basically requires de-soldering and some re-soldering of fixed surface mount resistors. This resultantly changes the CPU's multiplier thus = overclock.
The modifications to the cooling system were only pretty basic actually, I just lapped the surface of the aluminium heatsink (which wasnt finished to a very high standard out of the factory) and cleaned off all the thermal pad gunk and replaced it with some arctic silver 5.
Upgrading the ram, was basically just a straight swap, so pretty simple there. Likewise with the Hard Drive (make sure you buy a laptop hard drive)
The final last thing which can be modified on the mini which i havent, is upgrading the dvd drive to a writeable one.
heres some pics...
The Mini's G4 Processor
Front of the mini - dvd drive on top, mini speaker just below, hard drive buried just under the dvd drive.
Sorry for the blury pic, its very tiny, look almost exactly in the centre of the image, and see if you can notice the modifications - look for removed resistors.
The size of the resistors you have to remove. (yes theyre that tiny!)