cotdt, I have to ask: where did you get uranium-238, and what did that cost you?
This is where I currently am in this project: nowhere. I am still looking for the radiator. Since I can't do anything to hide a large external radiator, I want it to look nice and I want it to be copper so I can avoid corrosion (assuming I get all copper wb's). Something like
this would be ideal. Copper, gorgeous, made to just about any size--only problem is that they are somewhere I am not (Prague?). I haven't written them to see if they would ship to the US yet--I don't imagine they would though. Does anyone know of anything in the US that sells Cu radiators? And, assuming a US company exists for Cu radiators, I'm still having a hard time trying to determine how much radiator is enough. All the graphs I've seen begin their measurements well above the 0 air flow.
In looking into the Pentium M ideas, it seems like a pain in the ass to get a waterblock on using the 478 to 479 adaptor. If I can find a place that does custom radiator work (or just has one large enough), I may scrap the P-M idea in favor of something that's easier to work with and hopefully isn't too hot.
I've spent a bit of time drawing up case/housing/furniture plans and it has become clear that I need the parts in hand before I can get too specific. I'm looking for Cu waterblocks for processor, chipset, video card, mosfets and ram. No parts have been purchased, so I am extremely open to ideas. Bear in mind, this system will never be overclocked, is striving for dead silence and 24/7 uptime. I'm thinking of trying to build the cooling for the 8 hard drives myself even though I have never worked with metal or soldered in my life--we'll see how that goes...
The PSU(s) will also be watercooled. I'm not sure if I will need more than one and I'm also not sure if I will be purchasing absurdly expensive watercooled ones, or trying to cool an Antec Phantom as cotdt suggested (the problem i see with the phantom, is it is all finned, so I think mounting a WB to it with effective contact area would be near impossible). After doing the research, I've given up on trying to modding a regular PSU (actually wanted a redundant PSU) for watercooling because I simply don't have the experience to try it.
For pumps, I'm just trying to get the quietest possible. The Eheim 1048 keeps coming up as the quietest--I assume I would need two with all the blocks and the probability of a large radiator in the loop.
Any other heat producing items I should be thinking about? I'm going to be getting a 3ware RAID card, but I don't think they even come with heatsinks, so I'm thinking that won't be a problem.