Alpha w/delta black label mounting???

[PanteraGSTK]

This may be a stupid question, but is the fan supposed to blow air off the heatsink or on to it? Which is better?

thanks

[krakerman]

dunno about the alpha, but some can be turned either way. usually one way will work better than the other though. you *could* test both out and see, but wouldn't be worth risking a burned cpu if it doesnt like being turned one way ;-) i would think probably it blows in on it, but i have my own fan sucking out on mine (differenty hsf though) so who knows.

[Placid]

Most alpha heatsinks are designed so the fan blows away from the heatsink.
I have tried both ways and found having it blow into the heatsink gave slightly lower temps.
It can vary depending on your particular case fan setup so I would try both ways and see what gives you best temps.