Help for fan configuration

[infinitefreefall]

I just bought a case that has 1 side panel 120mm fan, 1 front 120mm fan, and one rear 120mm fan. What would be the best configuration for overclocking (I probably sound like an idiot, sorry its my first build)

 

[C12Friedman]

Welcome to Tom's Hardware Forums,
If pre-installed, the fans will be in the 'best' configuration for the case, normally that would be front as intake, side as intake and rear as exhaust. The PSU if placed so that the fan is toward the inside of the case will also act as an exhaust