Quote Originally Posted by Movieman View Post
I disagree..
Res-->Pump-->Rad-->CPU--> Back to res
you want your coolest water entering the cpu and that is always going to be the water coming out of the radiator.
Water is within 1°C through the entire loop after equilibrium.

About the pressure thing, if the rad is between the pump and CPU, the water loses X amount of pressure (whatever that rad is rated for) to create turbulence. Flow rate is constant, pressure is not.