I havnt talked peltiers for years.. back when I built my first system I considered it... (the system in my sig)
so you think peltier + water or peltier + air? I'm really a stingey bastard....
if I remember correctly (research 5 years ago) they have a hot side and cold side, but because of their power consumption they actually create heat, so if not used correctly can do more damage than good.
I havnt seen any around for a long time...(havnt been looking) who sells em anymore?
Swiftech just released its MCW60-T for video cards in the last couple of weeks, and Danger Den's Maze4 is still a classic. (I just bought one used off the Forums.) I'd start with these two companies' inventories.
When you're dealing with TEC's over 200W, air cooling stops being a viable option. I'd strongly recommend TEC+Water.
I'm going to say a Bong. Not the kind that you smoke Tobacco* out of. It's basicly a tube-in a bucket, with the warm water going into the tube (4" sewer piping works well), goes out of a shower-head or something similar to that, into the bucket. The bucket would be somewhat filled up. From there, the water is pumped back into the loop.
It works because the showerhead "vaporizes" the water (for a lack of a better term) so the evaperating is what really does the cooling there. Just remember to top it off every day or so.
Water towers...never seen that implemented into a computer cooling system before. Water + (Water tower + Fan) + Peltier = coldest solution I've heard of. Just make sure your powersupply has the wattage for the peltiers. I'd go to ebay for peltiers. They are a great price.
I'd imagine that on a dry day, you could get < 0*C with that setup. I think I'm going to try to make a watertower of my own...I'll have to wait on that until I build my next rig though.
"bong cooling" works if you are in a low humidity area or have a a/c system in house if not then the air is to saturated to take more "steam" and will not cool at all or very little. If you want to go sub 0c look into making a chiller out of a old or new window a/c unit and there you go. heat dump out the window and super cold in your pc