Quote Originally Posted by interDOS View Post
Thanks for that but I think I didn't explain my question very well.

Take two 480 rads, one of the 480 rads is fitted with FOUR 120 shrouds, the other is fitted with ONE SINGLE 480 shroud. Do you think there would be any difference in the air movement and cooling between the rad fitted with four 120 shrouds and the rad with a single 480 shroud?
I never did any testing in that regard, but I would guess that a single shroud would do a small amount better than individual ones since it also helps remove dead spots behind the fan frames in addition to the hub of each fan.