OK, I'm building my new computer and I need some case fan advice. I have two 80mm (one in front pulling in and one exhausting out the back) and I need to know where to put some more. I'm gonna either put another 80mm or possibly a 120mm exhaust on top. Is that enough? Or should I put one on the side blowing on the CPU and graphics card? My only concern with that is making a vaccuum with the 80 in the back....


Oh and miiiight be able to fit another very small fan up front pulling in air if I'm lucky...

The next fan you add should be a side fan. It's up to where you want to put it, but that would be the next-best place to put one.

And when push comes to shove, it's actually preferable to have more overall intake than exhaust.

so it would be OK to have an intake fan that close to the exhaust fan in the rear of the case?

Depending on where you put it, yeah. You want to create an overall airflow inside your case, so if you had say an intake fan on the side covering the CPU (and a little bit in front of it towards the RAM) then yeah, that will work. You don't necessarily want to go wild and create a case full of fans, but a few well-placed ones will serve to lower your case temp.