AIO and Case Fans

[VelikiPCguy]

Sorry if this is a bit of a dumb question, I'm building my first PC. If I mount the radiator of my AIO at the front of the case, does that effectively replace the fans which the case comes prebuilt with? And do modern cases generally allow you to do this, are their fans modular (not thinking of any case in particular, I'm just broadly curious)?

 

Lastly, if this is the case, then I'm assuming the AIO fans both perform the function of cooling the CPU and acting as ambient case cooling fans, correct?

[NorKris]

AIO in the front as intake is the best config
You take the fans that comes with the case in the front and use them maybe in the top of the case or somthing

 

[freeagent]

I have always liked it at the top or front and always as Intake because I tend to favor a positive environment with my setups.