Quote Originally Posted by serialk11r View Post
At half the flow, the pressure drop is much less than 1/2 but then the rads aren't exactly the biggest restriction in a loop so...
In series the second rad gets cooler water (but only cooler by a tiny bit) which means that it will cool worse (but by a tiny bit). :P doesn't really matter.

Are you saying that the greater the flow the higher the resistance gets? I have a hard time choking down that water cooling pumps could push enough water for you to even reach noticable loss in flow due to radiator configuration.

Saying the other radiator gets cooler water is like saying half of a larger radiator gets cooler water. If you didn't need the water colder after it left the first one why have a second?