[kibbles]

I'm wondering if my situation warrants some water cooling:

I live at more than 7000 feet elevation (so air is thinner), room temperature is nearly 80 F during the day, and I have a dual amd system that when the case lid is on, climbs right over 60 C, and keeps going up. It runs a max of 57 C when the lid is off, and all those fans (2 cpus, gpu, nb, 2 case fans, 2 ps fans) make a lot of noise together. Also, an open desktop case gathers a lot of dust.

I don't want this to digress into the cooling requirements at higher altitudes. Let it suffice that my PC is sweating it out.

Correct me if I am wrong, but by going to water and placing a heat exchanger outside the case, maybe in it's own enclosure, I get:
quieter case
less dust in the case (lower case airflow)
lower temperatures
easier fan control (regulate 1 instead of 5 or 6)
a big bill$$$

As a side question, has anyone turned their tower-case water cooled pc on its side and noticed improvements from lower head?