For the past 45 minutes I have been testing the setup of the rear and top 120mm fans in my P180. I have set it up in two different ways. First, was the normal way, having both the rear and top as exhaust (the way it is intended normally by Antec). But recently I put my hand by the top blowhole, and I can barely feel any air coming up from it at all. Then I put my hand behind the rear blowhole, and it is blowing out much more air.
So now I am thinking that maybe having both as exhaust is not a good idea. It seems like the Rear and Top blowhole are both fighting to blow out the same air. And since the rear is closer to all the heat, it is sucking the air out first before it can reach the top blowhole.
So now I figured let me try to switch the top blowhole as an intake, to see if I can get better temps, seeing that it will be blowing in cool air from outside the case right onto the processor, then the rear exhaust will blow out the hot air left from it. Well let me tell you, after testing each way for about 20 minutes each. I am getting 5C better temps on my CPU when running the top blow hole as intake, and the rear as exhaust, rather than running both as exhaust.
I ran prime95 for 20 minutes straight in each configuration. When having both fans as exhaust, I was getting 57C load temps. When switching the top blowhole to intake, temps dropped to 52C load. So for all you P180 users out there, this might be something you want to test our yourself. To see if this same method works in your setup.
So now I am thinking that maybe having both as exhaust is not a good idea. It seems like the Rear and Top blowhole are both fighting to blow out the same air. And since the rear is closer to all the heat, it is sucking the air out first before it can reach the top blowhole.
So now I figured let me try to switch the top blowhole as an intake, to see if I can get better temps, seeing that it will be blowing in cool air from outside the case right onto the processor, then the rear exhaust will blow out the hot air left from it. Well let me tell you, after testing each way for about 20 minutes each. I am getting 5C better temps on my CPU when running the top blow hole as intake, and the rear as exhaust, rather than running both as exhaust.
I ran prime95 for 20 minutes straight in each configuration. When having both fans as exhaust, I was getting 57C load temps. When switching the top blowhole to intake, temps dropped to 52C load. So for all you P180 users out there, this might be something you want to test our yourself. To see if this same method works in your setup.
