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wob
Joined: Apr 25, 2006
Posts: 4
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 Posted: Wed Apr 26, 2006 10:04 am Post subject: |
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| Should the cpu fan be pulling the hot air off the cpu or should it be blowing cool air on heat sink and cpu? I have built a couple computers latly using AMD cpu and am having over heating problems I had always used Intel in the past and never a problem. With theses AMD's the heatsinks and fans seam so small and cheap compared to the Intels so I want to know should I screw the fan to the heatsink so that it is blowing on or pulling off as far as the air flow? I use SpeedFan and MBM 5 to monitor the temps also have looked in bios.
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reader
Joined: May 07, 2004
Posts: 1617
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| Posted: Wed Apr 26, 2006 10:16 am Post subject: |
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| Normally fans can/should only be mounted one way, and that is "up".
Have you used thermal paste (cooling paste) between the cpu and the heat sink ? It's needed in most cases to ensure proper and optimal cooling by the sink/fan.
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Rons
Joined: Dec 07, 2002
Posts: 5667
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| Posted: Wed Apr 26, 2006 10:23 am Post subject: |
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| What is your cpu temp ? |
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wob
Joined: Apr 25, 2006
Posts: 4
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| Posted: Wed Apr 26, 2006 10:43 am Post subject: |
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| Quote: |
Normally fans can/should only be mounted one way, and that is "up".
Have you used thermal paste (cooling paste) between the cpu and the heat sink ? It's needed in most cases to ensure proper and optimal cooling by the sink/fan.
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Yes I have used thermal paste and with the problem I removed cleaned and pasted again. The reason for this question is I took a old cpu fan from a PIII and when I hold it in front of the cpu heatsink fan and let the air blow on the amd the temp drops fast.
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What is your cpu temp ?
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60'sC this is on 2 different computers one has amd 3200+ the other is a sempron 3300+ |
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Werebo
Joined: Aug 09, 2003
Posts: 4077
Location: SE London, UK...
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| Posted: Wed Apr 26, 2006 11:31 am Post subject: |
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Allo Wob and welcome to the Lockergnome forums 
There are fans that will happily an successfully suck/blow air all day and then there are fans in name only :biggrin: . The blades will spin but because the blades are almost horizontal, there's little air movement... A gnat breaking wind can cause stronger air movement :laugh: ...
If the fan off your P3 will fit on the AMD heatsink, i.e. the screw-holes line up etc. then by all means use it... AMD's are supposed to run cooler than Pentiums and 62C, although within operational parameters, is pushing it a bit.
:thumbup:
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wob
Joined: Apr 25, 2006
Posts: 4
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| Posted: Wed Apr 26, 2006 12:37 pm Post subject: |
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Allo Wob and welcome to the Lockergnome forums
There are fans that will happily an successfully suck/blow air all day and then there are fans in name only :biggrin: . The blades will spin but because the blades are almost horizontal, there's little air movement... A gnat breaking wind can cause stronger air movement :laugh: ...
If the fan off your P3 will fit on the AMD heatsink, i.e. the screw-holes line up etc. then by all means use it... AMD's are supposed to run cooler than Pentiums and 62C, although within operational parameters, is pushing it a bit.
:thumbup:
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But Werebo you did not answer my question you was just blowing wind, now answer my question which way should the wind blow? Should it blow down on the heatsink and cpu or blowing away from the heatsink and cpu? |
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Werebo
Joined: Aug 09, 2003
Posts: 4077
Location: SE London, UK...
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| Posted: Wed Apr 26, 2006 3:37 pm Post subject: |
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I don't think it makes a lot of difference really, it's pulling cool air from around itself and putting it back warmer...
Blowing cool air into the vanes should, in theory, reduce the dust build-up on the blades cos the air is cooler and less statically charged. Also, depending on the fan strength, it might blow the dust off the vanes which can't be a bad thing  .
It's mainly down to the fan itself. There's usually a distinct top and bottom (label to top) so when fitted, whatever way it blows when connected.
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catlady13
Joined: Jun 29, 2004
Posts: 16
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| Posted: Thu Apr 27, 2006 10:35 am Post subject: |
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| Every cpu fan that I have had has come attached to the heat sink and they all have blown away from the cpu thus far. |
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wob
Joined: Apr 25, 2006
Posts: 4
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| Posted: Thu Apr 27, 2006 11:59 am Post subject: |
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| tanks cat,lesson learned |
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Gaucherre
Joined: Jan 05, 2005
Posts: 229
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| Posted: Fri Apr 28, 2006 2:33 pm Post subject: |
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| Just for the record, AMD's standard heatsink/fan that comes with the retail boxed version of their processors does a good job of cooling and is not very noisy. For overclocking, a different design with better cooling is necessary - but watch out for the noise and the (sometimes) high price. |
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