Exhaust fan for PC cabinet

[v3rk]

I prefer to keep my PC in a cabinet, but it gets rather hot in there. I'm installing an exhaust fan at the back of the cabinet and am wondering about the ideal placement. Would it be better to install it directly behind the exhaust fans of my PC, or at the top of the cabinet?

I'm guessing at the top, because there's a good 6" of space from my PC to the back of the cabinet, so the hot air should rise to the top correct? Just looking for some input.

 

[M0j0jojo]

The top since hot air rises, it will just help the process of moving the air faster.

 

[coozie7]

^+1.
And don't forget to allow some ventilation in the front of the cabinet.