All cards are tightly packed together with no extensions inside an Antec 1200. A scythe 135cfm fan is blowing directly onto the video cards. I'd also like to mention that it's also quiet, you can place it in another room without hearing it in the next.
I know I can overclock these to get 1GH by shoving fanspeeds up higher, but how much higher can they run before wearing down the fans?
Something I was going to build until I figured out, that the cards would barely
cover electricity costs in the place, where I live...