Intake v exhaust AIO radiator top mounted

[Jonnybmac]

If you had an AIO radiator mounted on top of the case, would you:

Draw outside air through the radiator and into the case at an increased temperature as intake with other fans as exhaust

or

Draw cold air through other fans into the case then have slightly warmer air pass through the radiator and out as an exhaust

 

[Jonnybmac]

Thank you for your help