[Gooserider]

Let me try something simpler...

Two questions:

1. Assuming the rad and fan are connected by a plenum so there is no air leakage, and that the plenum gives at least a couple of inches between them (to avoid surface interference problems)

Is it better for airflow to have the fan blowing air into the rad, or pulling the air through it? Or does it make a difference...

If one is trying to keep the noise down, will having the rad between the fan and the outside reduce the noise?

2. Assuming that there are fans on the intake and exhaust of the case, and air only enters and exits the case through them...

Is it better for cooling to position the rad at the intake of a case, so that it gets the coolest air, (but then blows that slightly warmer air through the case) or at the exhaust of the case, where it sees warmer air but then gets it out of the case?

(I know the otpimum approach is to pull outside air through the rad and then vent it to the outside without going through the rest of the case; but that would then require additional fans for case air circulation, which IMHO is not an acceptable option.)

Thanks,
Gooserider