Blowhole.....Sucking or Blowing?

[Justin]

Im mounting a blowhole in the top portion of my case(duh) but i have read artcles on it both blowing in air and sucking out the hot air. What do you guys do?

[samuknow]

You want to draw air out of the case at the top. in at the bottom.

also if you can, you want a little pos pressure in the case. this helps get rid of hot spots.......

[Placid]

I agree in general with it blowing out.
You need to consider how much you have going in thou if you care about not creating negative pressure.

[AMDGuy]

Blowing out at the top of the case. Air rises, so the hottest air will be at the top.