Fan...

[Spicker]

WELL sum guy through away his old pc he had this extra fan which hooks up to the power line in the pc...and i was just wondering if i shud put it in the front or the bac...cause i dunt hav any holders for the side..and shud it suck air out of the pc or put air in the pc...well rite now i hav it in the front with it putting air inside but i dunt think i did it correctly....well anyway i hav a P4 and 256 sdr at 1.9 ghz..just incase if u wanted to noe...

[balamm]

Duties are not performed for duty's sake, but because their neglect would make the man uncomfortable. A man performs but one duty - the duty of contenting his spirit, the duty of making himself agreeable to himself.
Mark Twain

[Somebody1234]

If you are adding one fan to a system that only has the power suppy exhaust fan then add that one fan at the back and set it up to exhaust.

[Spicker]

well i guess i put it correctly then B)

ok now i am confused...lol which one to follow....lol

[Somebody1234]

I'm quite sure if you take it from the front and put it in the back and have it blowing outwards it will run cooler.

Simple airflow diagrams:

One in front and one in back looks like this:

---> --->

None in front and both in back looks like this:

--->
--->

So it's either one fan blowing into another or two fans side by side.

I think 2 fans side by side will move more air.

I hope this is clear enough. :blink: :unsure:

[balamm]

Duties are not performed for duty's sake, but because their neglect would make the man uncomfortable. A man performs but one duty - the duty of contenting his spirit, the duty of making himself agreeable to himself.
Mark Twain

[PcH]

Extra fans are always great. :P

[Spicker]

u ppl r confusing me more lol

[Somebody1234]

Does you board have temperature monitoring?

If so... Try these tests with the fan in the front (blowing inwards).

Run your system without any programs running for maybe 15 minutes and take a reading. (idle temp.)
Then run your system under load (There are programs that will do that: Try this one. (http://pw1.netcom.com/~hjsmith/Pi/Super_Pi.html)) and take a temperature reading again. (under load temp.)

Then move the fan to the back of your case (blowing outwards) and repeat the tests.

You would then be able to tell which way cools the best.

If you do this test... Please post your results. :)

[balamm]

Duties are not performed for duty's sake, but because their neglect would make the man uncomfortable. A man performs but one duty - the duty of contenting his spirit, the duty of making himself agreeable to himself.
Mark Twain

[harrycary]

Logic dictates that the intake be as low as possible and exhaust as high as possible. It's not rocket science. Warm air rises.

[Spicker]

thx for all ur suggestions i am gonna go try sum of em out.... B)