Quote Originally Posted by Waterlogged View Post
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.
It will have the exact same pressure drop no matter where it is in a loop.

If a pump produces 100 units of pressure (at the flowrate of the given loop), the rad has a pressure drop (at this flowrate) of 20 units, the res has a pressure drop of 5, and the CPU block a pressure drop of 75, it will be 75 no matter where it is in the loop. X units of pressure will exist at the intake and there will be X-75 units immediately after the block.

Doesn't matter if the order is 75-20-5, 20-75-5, 5-20-75, or whatever. The pressure drop of any given component is a given curve like these:
. That curve doesn't change depending on where it is in a loop. Therefore, the pressure drop doesn't change depending on where it is in a loop, therefore the flow doesn't change, therefore the performance doesn't change.