PSU Installation for Cooler HAF Master 922

I am building my first PC with a Cooler Master HAF 922 case and a Cooler Master M700 PSU. The PSU is bottom mounted.

My question is whether to intall the PCU with the fan down (the "proper" way) or upside down with the fan up (to provide more air circulation in the case).

If I install it the correct way, the case will have to be elevated off the floor to provide airflow. If I install it upside down (I have read that it can) it seems like it would pull air away from the CPU and out the back of the case through the PSU vent.

Also, the PSU comes with silicon shock absorption rubber pads around the edges of the power supply. The use of these pads is optional. Should I use them?

I would appreciate your thoughts and recommendations.
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  1. I would install the PSU with the fan facing up. This way the fan acts like an exhaust fan, as designed (sucking hot air out through the PSU). It won't take air from your CPU, so don't worry about that part.

    I would install the pads... It help keep the vibration down on your PSU, which isn't a bad thing. :)
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