🚀 go-pugleaf

Tony Houghton wrote:
> 
> In <8uccse$9q5$1@nntp.itservices.ubc.ca>,
> Bill Unruh <unruh@physics.ubc.ca> wrote:
> 
> > I think the theory is that the power supply is the hottest thing in the
> > computer, and thus having the air run over the power supply last is the
> > best way to keep the insides cool.
> 
> Exactly, especially in desktop cases where convection doesn't apply.

I think the CPU is actually the hottest thing in there, but it's quite
small. The PSU generates more heat, but is larger, so it doesn't get as
hot. As long as the CPU fan is working properly, the CPU shouldn't be an
issue so the above seems reasonable. The PSU is also the least likely to
be temperature sensitive, so having it cooled by fairly hot air
shouldn't matter.

> 
> > I would rather have the fan suck in
> > in part so that I can place a decent air filter over the air intake.
> > (One of my machines stopped because so much dust had collected on the
> > CPU fan that it stopped running.)
> 
> Maybe you could fit a chassis fan at the bottom/front and filter that.
> Strangely, my PCs don't collect much dust considering how backward we
> are with the housework here.

This seems to be a desktop/tower issue too. We have a few of each, and
most of my desktops have had problems with fans clogging up and floppies
and CDs getting too dirty to work. I once took the lid off a desktop and
had to take the components outside to brush them down because there was
so much muck in there. No such problems with towers. We are challenged
in the housework department too (I plan to hire a cleaner once I get the
place clean enough for anyone to accept the job:) Another problem with
desktops is the user smoking - I am guilty of this. With a desktop you
tend to blow smoke into it; a tower is usually out of range. I have
taken to putting desktop units on the floor. I would turn them on their
side if it wasn't for the disk drives which aren't actually screwed in:)

Ian