Case fans positioning.

[Zenny232323]

Hello everyone, I would like to hear an expert opinion about something. I got an Corsair 4000x, with 3x120mm fans at the front, and bought 2x140mm fans for top exhausts. 

My concern the IO corner fans would be exhausting fresh air without making it into the system. Should I rearrange them or keep as is?

[Starelementpoke]

The fresh air is being provided by the fans at the front. The exhaust should pull the warm air away from the CPU though. Here's a video of someone doing some fog testing with the case so you can see some of the fan configs and how they'll affect the temperature. Tests are quick and dirty but should be clear enough to give you an idea of the config you'll want:

 In short though you should be more than fine with just 1 exhaust. More and its likely that it'll pull the air through too quickly.