Ok, as of right now I only ave five case fans. All of them corsair ml pro120 (magnetic levitation) fans 3 led 2 non. They are all radiator fans. I have 4 in push pull on my cpu cooler and one on my gpu radiator. My Radiator is at the front of my case with all fans pulling air into my case. My gpu cooler is at the rear exhast pushing air out of the case thru the radiator. That is not push pull yet. I am putting 2 more on inside up top and my thoughts are to have the front top pulling air in as my front radiator is just under it and a tad to the right also pullinh air in. And have hte rear top pushing air out. It's either that or thave them both pulling air in and only habe the one exhaust fan pushing air put through the radiator. That would create a lot of positive air pressure and I would think would work really good as there are plenty of holes in the back to push the rest of the air out of. I have the corsair 400c so if you google that and click on images you can look at the back and see there is plenty of ventialtion. I think if I have the front top pushing put that most the air coming in from the front will immediately go out the top and not cool a lot. Then if I had the rear top pulling in it would immediately go out the back but if I had it the other way around it would create much more circulation. So I'm trying to get some opinions on whether top front pulling in top rear pushing out or both top pulling in and being forced out thru the rear vents and rear radiator. Please help