Pull + Push orientation fans on rad?

two ways to find out.

1. is to look on the side of the fan for some arrows. you will find two of them. One arrow shows the direction of the spin and the other the direction of the air flow.

Plug it into a molex and hold on tight while you power on your board and then unplug and shutdown.

3. Fan direction is alway blowing where the sticker and the wires are exposed. the plain side is the suck side.

Have them both blowing in the same direction, one pulling, one pushing. <rad<