Top or front mounted radiator?

[Thrywyn]

I am building my first PC and i was wondering whether or not to put the radiator in front to cool the CPU better, or to have it on the top, set to exaust. I am building this in a Noctis 450 case and it comes with preinstalled fans in the front and back.

 

[alexoiu]

I'd mount it on top.

 

[Thrywyn]

I'd mount it on top.

Ive seen multiple videos and benchmarks where temps increase by 10C at least when mounting at front though...
Thats why i am mounting it in front.
Example:
https://youtu.be/xNAMxZgvves?t=10m25s