The Position of a PSU in a Case

[PGdude]

We all know that you can conventionally have the PSU at the top of the case, or less conventionally (But more frequently now) at the bottom of the case.

What is the point? What's the purpose of all of this? What are the advantages to either?

 

[PGdude]

If the PSU is already exhausting warm air from itself at the top, doesn't it simply exhaust its own warm air and the system air with it?

Or is it because of the greater heat in the PSU itself causing the potential for convection to decrease, meaning the system as a whole stays warmer?

On the latter basis, I think I'll go for a PSU on the bottom case. Antec 300 has a fanon the top anyway, so... cool

 

[PGdude]

Should also rattle less when it is at the bottom. Something to do with moments or whatnot.

I think I'll have to question my Physics teacher about this

I'm gonna dive into an Antec 300, because my StealthXStream is really quiet and cool, so I think it will be a great pair. Sounds good?