Atrocities said:
Again, water cooling the cpu or more case fans? Which do you think or know, is better?
Water cooling should be more effective and (almost surely, depends on exact setup) quieter than case fans -
but it does have complications...
1). You have to make sure that your setup is totally leak-proof (conventional wisdom is to run the cooling for 24 hours without the PC switched on, in order to check for leaks). If you are chilling the water to below-ambient temperatures (e.g. by using a phase change or thermo-electric cooler on the water) then you may also need to lag everything to prevent condensation from causing similar problems (depending on the chiller temperature and the dew point of your PC's surroundings).
2). You will need to use distilled water with additives to avoid algae buildup (not harmful but looks bad) and
galvanic corrision. These additives will need topping up every year or so.
3). Hardware changes (new graphics card, extra RAM) are harder to do with water-cooling pipework in the way. You may also need to drain the system to swap out a water-cooled item (CPU, GPU).
There are a number of forums with more information on the more "esoteric" forms of cooling -
Xtreme Systems being one of the largest and worth checking out for those interested.