Having only justed finished building an Antec 300 i've decided to get the case powder coated and add a water cooling kit .The thing that is crunching the grey matter at the moment is the placement of the rad ( 120) If i can i want to keep it internally and was thinking of mounting it where the rear exhaust is . Is this a bad idea considering that the fan pulls hot air from the case ? or is it not really going to make a big difference considering there is a 140 fan sat right above it ? This as you can tell is my first venture in to a water cooled rig .
Ideally, you don't want "circular" current of air in the case; you want it all going one way. If I was you, I'd have your front fans as an intake, then the top as exhaust (obviously) and the rad fan, and any at the back of the case as exhaust.
