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OP
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jeff_harrison_344

Senior Member
Joined
Jan 23, 2001
Yeah I know thats how they come, I was just wonderin if anyone had tries it and gotten any diff. results
 

WillysNut

Senior Jeep Nut
Joined
Apr 18, 2001
Location
NY, USA
I think it really all depends on ambient temp but....I would rather be forcing air, at a very high rate, regardless of noise (which can be dealt w/), over the heat sink. As opposed to relying on the inlet of the delta fan to draw air across the entire heat sink which I don't think will happen. Air comming into the delta inlet would probably cover the top 2/3 of the heatsink.

When the fan blows onto the sink....there is air moving across every copper fin and on the baseplate...copper is dependent on this forced air to aid in the dissipation of heat from the fins.
 

ken257

Senior Member
Joined
Dec 20, 2000
Heatsinks like the Alpha Pal 6035 and the Hedgehog that are designed to have the fans sucking come with a shroud that blocks the top half of the fins. This ensures that air comes in the bottom and is drawn up. Without this shroud it is not nearly as effective. If you want to experament you could use some tape to cover the upper part of the fins.
 

PDL

Member
Joined
Apr 21, 2001
Location
OH-Heartland of the USA
I have a FOP32-1 and tried reversing the airflow.. made it worse!

I think it messes up the air pressure when you try to pull enough air through the fins.

We have to trust that the people who get paid big bucks to design these things know what they are doing!!! HeHe!!