Omnis
Does anyone have suggestions for a good aluminum case? Liquid Cooling is quieter than air cooling, right? We may just go liquid...we don't know yet. We're going to throw a fan on the case or whatever and see how things turn out.
Liquid cooling isn't always quieter. It just makes it colder than air cooling can without generating as much noise as air. A fan running air over the densely packed fins of a radiator will make a bunch of turbulence unfortunately.
For the case, go with the Antec Sonata II. It's made of high quality, heavy guage steel, but it's the quietest air cooling case out there. Aluminum is nice, but because it's thin, it creates a bit of a hum from vibrations. Otherwise, the Praeteron looks good 👍
For the fans, a good case should come with a 120mm fan for rear exhaust, consider adding one for the front intake.
For the CPU cooler, don't bother. The Athlon dual core chips have a phenominal heatpipe cooler that'll compete with just about anything out there. If you really must swap that, use a Thermalright XP-120 with a Nexus 120mm fan over it. Best cooling to noise ratio out there 👍
For the video card, the Zalman VF700-Cu has gotten fantastic reviews for older cards for it's lack of noise and performance. It's compatible with the 7800GTX, but i don't know how it'll perform on a monster card like that.
Tie all this off with a good fan controlller