Suppose I have a 20x20x20 c"m plastic box where the top cover is open.
On the top cover there is a fan ( 20x20 cm) which suppose to cool a cpu which is in the box .
At the bottom there is a CPU which is getting warm.
Now - in order to cool the CPU - I have 2 options :
- put the fan to suck air from the box towards outside
- put the fan to push air from outside towards the box.
Final goal :
Max - Cooling the cpu.
Which is the preferred approach ?