Cheap way to cool a PowerBook 15 inch

Discussion in 'General Mac Discussion' started by aussie_geek, Jan 22, 2005.

  1. aussie_geek macrumors 65816


    Apr 19, 2004
    Sydney Australia
    I was starting to get a little concerned with the temperature of my 15 inch so I thought about some ways to cool the little firecracker. After reading reviews on laptop cooling platforms, I didn't think that they were relevant because of the price and the fact that I already have an iCurve. The cooling stands are about $70 au and I didn't feel like forking out that type of cash.

    I have recently acquired a 20 inch cinema display (which is excellent by the way :D) to use as the main monitor with my PowerBook and I noticed the temperatures were increased compared to using the PowerBook by itself. I have been using temperature monitor to assess the temperature of the PowerBook and I was finding that the temperature was in excess of 63 degrees :eek:.

    I have found a solution for my dillemma. It involves a USB fan - I got mine for $20 au. You can get them cheaper on ebay but I was impatient and wanted to try my idea today :p.

    I loaded up the CPU by running iTunes playing an songs with the visualiser set to large within the iTunes window. The CPU was running at 90 - 95 percent capacity according to iPulse - a system monitoring program.

    So, after some experimentation with the fan's position I have found exactly where to put it in relationship to the PowerBook to achieve the best cooling effect. I know this setup will not be useful for people who don't run an external display but for those who do, it may be helpful.

    I have included the positioning of the fans and the temperature readings below.


    Attached Files:

  2. joepunk macrumors 68030


    Aug 5, 2004
    a profane existence
    Interesting, Thanks!

    I was thinking of purchasing a USB fan for my self but I guess I should also think of my PB as well and not just me :p
  3. DanTekGeek macrumors 6502

    Nov 11, 2004
    Denver, CO
    i have found that any way to move air under your machine is the best way. I currently have my thinkpad sitting on a cheap laptop stand, with an old pc exaust fan blowing air underneath. nice and cool .
  4. slipper macrumors 68000


    Nov 19, 2003
    lol thats exactly what i do when i download from bittorrent overnight. i found that it works best when you place the fan behind the computer right by the hinge where the vents are.
  5. puckhead193 macrumors G3


    May 25, 2004
    I bought a USB fan for myself when i had an ibook for High school, my school dind't have A/C so i bought it and I was cooler in may and june, everyone was so jelous :cool:
  6. aussie_geek thread starter macrumors 65816


    Apr 19, 2004
    Sydney Australia
    doh!! - -and I thought I was the only one who developed this thermal exchange system!! :p

  7. Mechcozmo macrumors 603


    Jul 17, 2004
    The reason your lappy gets hotter when you use an external display is because the graphics card is being used more-- it must drive two displays.

    And I just pour water on my PowerBook. It works pretty well, gets it cooled off fast, but it turns off whenever I do it....:p
  8. bubbamac macrumors 6502

    Dec 24, 2003
    Interesting thread - I just got a FlyFan off Ebay, should be at the house tomorrow. I plan to use it as 'slipper' describes.

    I've been trying for about a year now to find a PC exhaust fan that's USB powered, and just carry that - but was unsuccessful. I suppose I could have tried adapting the power cable myself, but I'm too lazy.

    I also don't want to carry around one of those "laptop pads" that has a fan embedded in it - my suitcase is already too full.
  9. JzzTrump22 macrumors 65816

    Apr 13, 2004
    New York
    I just put a book under my powerbook and get a fan blowing under it when it gets really hot. But that rarely occurs.

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