Well there [img]/images/graemlins/smile.gif[/img] I'll agree that it depends on the current airflow in the case, etc. It's mainly related to design and I'm going to guess he has a standard HSF that came with the CPU, most HSF on the market push air through the HS.

Alpha HSF usually will suck as they are designed for it...however the shroud is removable for a reason...if you wanted to blow.

Since it depends on the particular situation it's always best to try both ways, but with a cheap HS it's almost always blow.

I didn't think it was physically possible, but this both sucks and blows. -Bart