Need help with case fan positioning

I'm wondering what case fan combination will give me the most effective cooling.

The combination I have in mind is
1x Top 120mm exhaust
1x Rear 120mm exhaust
1x side 120mm exhaust
1x front 120mm intake

or
2 x top 120mm exhaust
1x rear 120mm exhaust
1x front 120mm intake

Which one will be more efficient at keeping the case cool?
thanks in advance
1 answer Last reply
More about need case positioning
  1. Good info http://www.tomshardware.com/reviews/cooling-airflow-heatsink,3053.html http://www.tomshardware.com/reviews/cooling-air-pressure-heatsink,3058.html
    Normally front and side intake top and back exhaust! Just change the side fan in your first count.
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