Sorry to go slightly OT, but I noticed some people said:-
Res > Pump > Rad .... etc
I would have just went:-
Res > Pump > CPU ... etc
Does going through the Rad initially make the water slightly cooler so should in theory give better cooling when it reaches the first point on the loop, i.e. CPU or GPU?
Thanks.
Hardly measurable difference. After a few minutes all the water in the loop will be the same temperature anyway.