Originally Posted by ramicio
Wrong, water cooling is the use of fresh water to cool something, not water in a loop that winds up being cooled by a radiator. You can't just compare some small man-made system to the entire world and claim that everything is really in one giant loop.
Why does it matter what the water itself is being cooled by? In the end you do have to cool it with something, most of the time the thing cooling it is air. All a radiator does is make the process faster so you don't need huge amounts of water.
And I can do exactly that because there is no clear cut point where you can say "this is watercooling and this is not". You're always going to have the same questions about the amount of water used, how it's being cooled etc. What if I had a big bucket standing outside? How about geothermal loops? Drawing water from a pool? A passive radiator watercooling system? Chilled water loops?
Phase change cooling is cooling something by a liquid evaporating to a gas and compressing that gas back to liquid. What you are cooling with that radiator is the phase change, not the heat transferred from what you are cooling.
If the heat transferred from the CPU doesn't get transferred to air then I'd like to know what kind of black magic this system is made of. Yes the radiator is cooling coolant and the air going through it (radiator) is also cooling the entire phase change system.
Phase change process cools the CPU via the IHS of the chip and the evaporator's copper base, the coolant is cooled by air in the radiator etc.