QUOTE (opac @ Apr 27 2008 at 03:14 PM)

Best personal computer for gaming from Dell is H2C. So goood, except it overheats... even with H2C cooling.

Yeah? No. Seriously--if it's Dell, it's not the best. I've said it many times--the only way to get the best computer possible is to put it together yourself. Contracts prevent companies such as Dell, HP, and Gateway from making you your uber computer. look at the Dell H2C for proof--it doesn't have the best of the best. Things to change from their configuration would be motherboard chipset--nVidia's nForce 790i is pretty good--though Intel's X48 chipset is a better choice, most of the time. You can get everything you want and more, and it's still not the "best".
QUOTE (Acid @ Apr 27 2008 at 03:41 PM)

QUOTE (opac @ Apr 27 2008 at 08:14 PM)

Best personal computer for gaming from Dell is H2C. So goood, except it overheats... even with H2C cooling.

Whoa just checked out that comp,
680i = hot northbridge + low FSB wall
QX6850 - good chip but why not a qx9650? even a q9450 would OC better
I don't know much about TEC's (bob-sama might be able to fill that one) but they seem to suck up a lot of power? Personally i don't see the point, everyday use = 3x yate loon + black ice rad + high flow = cool?
Someone mind jumping in with why TEC's would make a good everyday usage cooling system?
TECs are thermal-electric coolers. In short, TEC systems are like small freezers. They'll let you drop temperatures and many can handle a respectable heat load, most retail models lose their potency above 150W-200W of heat dissipation. They're not exactly exotic--at least not as exotic as the usual Phase, DICE, LN2, and Chiller systems. It functions on the concept of a Chiller, but it still is much different. Actually--chiller systems are basically souped up air conditioners, cooling liquids far sub-ambient. Depending on the unit and the amount of liquid, they can handle hundreds of watts of heat. They suck power, but they are also pretty good--a good choice if you really want sub-ambient. I see no point, really. Most of the time you need a large cooler to put the supplies in, and it adds hundreds of pounds. I know of several water-cooled systems that will be able to easily dissipate 600W or more of heat--usually huge computers compared to your everyday towers.
For water cooling, it all depends on what you want to do. Black Ice rads (Pro, Extreme, 1x120 to 3x120) are a bit of budget models. Usually I'd say look at Swiftech rad or something similar. A few Yate Loons (low or medium speed) are awesome for fans--and they're very inexpensive while still quite silent and long-lasting. Flow doesn't matter that much... high-flow can get more liquid to absorb heat, low-flow has the liquid there long to absorb more heat. As long as you have above about a 0.8 GPM (gallons per minute) flow rate, you should be fine. Most of the time, high-flow comes with higher pump settings--meaning it can add some extra sound. If you have it dampened enough, that's not a problem. Usually people recommend high-flow, because future upgrades won't kill your flow. High-flow blocks, such as a D-Tek Fuzion, are usually paired. Petra's Tech Shop FTW for water cooling supplies.
EDIT: Forgot to answer another part of the question...
TECs make sense for lower-load systems. They're compact, though retail models are quite loud. Upgrade to a 120mm fan (120-to-92mm adapter) and you are on the right track. I know some people will mod some of those CoolIt units, adding extra TECs and putting it on a 2x120mm rad. It's pretty far to go, but it's still more compact then many standard water cooling systems when stock and handles a higher load then water or air.