Fan running at MAX all the time. Any Problems with this?

Discussion in 'MacBook Pro' started by qwerty123123, Sep 17, 2012.

  1. qwerty123123 macrumors newbie

    Joined:
    Apr 19, 2012
    #1
    So, my MBP 13 keeps getting really hot and then shuts down, so i was thinking i should get smc control and make my fans run at 6200 rpm all the time. will there be any problems with this?
     
  2. afinch1992 macrumors 6502

    afinch1992

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    #2
    if its running hot enough to shut down and the system doesnt automatically run the fans, you should probably check whats using that much power first.
     
  3. killerrobot macrumors 68020

    killerrobot

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    #3
    The mbp shutting down by itself is a huge problem. You should get it checked out by Apple. Without knowing the cause of the heat problem (is it a faulty temp censor?, are the fans not working properly?, is the processing actually hitting 100 degrees C?) running the fans at full blast might increase the problems and do permanent damage to the machine.
     
  4. Dark Void macrumors 68030

    Dark Void

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    #4
    If it's consistently shutting down on its own due to overheating then you should take it in to Apple.
     
  5. Queen6, Sep 17, 2012
    Last edited: Sep 18, 2012

    Queen6 macrumors 603

    Queen6

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    #5
    If you are concerned with the temperatures and want to reduce them elevation of the rear of the machine helps, as sitting flat on the desk only reflects the head back to the base of the Mac. You can buy passive aluminium coolers like Rain Designs Mstand or iLap. Most powered coolers are designed for PC notebooks and don't work overly well with Mac`s one cooler that does work efficiently is the Moshi Zefyr 2, as it`s principle of cooling is specifically designed for Apple portables, by blowing the air horizontally across the base of the computer, however don't expect miracles.
    [​IMG][​IMG]
    [​IMG]

    Link: Moshi Zefyr 2
    A cheap USB fan cab achieve the same if strategically placed, not as elegant mind, but they do help to reduce case temperatures.

    You can use software to override Apple`s own cooling algorithm by manually taking control of fan RPM and setting up power profile presets with SMC Fan Control 2.4, or here with UltraFan which allows you stipulate a preset temperature and the software will automatically raise and lower fan RPM`s to keep the system at the predefined temp, which i personally feel is a far more elegant solution. At the end of the day you want to control your system temperature, not your fan rpm`s. For me SMC is now pretty much redundant with the latest release of UltraFan having manual control of the fans RPM, and i am starting to uninstall it from my own Mac`s. SMC FC is a great app, however although it`s recently updated, functionality is limited compared to some newer apps, equally SMC Fan Control is rock steady stable.

    Strictly speaking Apple`s own cooling algorithm works, albeit at sacrifice of increased temps for quieter operation. This has always been the Apple way and is really nothing detrimental to the system, i have one MBP from 2008 all original barring a recent fan change that has an uptime of over 30K hours. The latest MBP`s need less assistance in remaining cool; for some it`s simply disconcerting the heat generated and transferred to the case, although it`s perfectly normal as the aluminium acts as a heat-sync. i have to deal with elevated ambient temperature so at times a software solution is useful. Apart from the passive cooling the Mstands bring they also offer a very sound ergonomic solution. A passive cooler and UltraFan will maximise the cooling, there is little else you can do short of reducing the ambient temperature or the system load. If I know i am going to push a system i will close all apps that are not essential as this can and does make an impact to system temperature.

    High temperatures in general is not overly harmful to your systems, what is far more detrimental is thermal stress, when temperatures rapidly fluctuate by significant margins in a short period of time. Anyone striving for great longevity should look to minimise rapid fluctuation of temperature.

    The old adage still applies; it`s easier to keep a system cool, than cool-down an already hot machine. This being said it`s not strictly necessary, equally it`s good to know that there are options for reducing temperature out there.

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    In the OP`s case there is more going on as the system should not be shutting down under normal operation, cooling system may need cleaning for one. Process also need looking at as an app is driving up the temp in the first place. The above helps systems under heavy load reduce temps, more information on your usage and handling of the Mac would be of help.
     
  6. Dark Void macrumors 68030

    Dark Void

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    #6
    $80 for a laptop cooler? I think that is a case of something that is suppose to make you feel like you should be using something that is "designed for a Mac."

    Solid quality laptop coolers can be had for $20. I don't see how a cooler "designed for a PC notebook" won't work well with a Mac. If it fits your laptop then it will do what it is designed to do.

    In any case, a cooling pad/fan/device isn't going to remedy the situation, clearly if it is shutting down consistently there is some type of defect.
     
  7. MarcBook macrumors 6502a

    MarcBook

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    #7
    Your Mac should be able to handle its own cooling and really shouldn't reach the point where it shuts itself down from overheating.

    It sounds to me like there's either a problem with the heat sensors (as mentioned above), your fan has died (there's only one in the 13" model) or your heat sink is massively clogged up with dust.

    No matter which of the above problems it is, I'd highly recommend taking it to an Apple store and getting it checked out. Don't forget to make a Genius Bar appointment first.
     
  8. Queen6 macrumors 603

    Queen6

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    #8
    Yes and no, average PC cooler pad wont work with a Mac unless there is a very high volume of airflow, which would likely be overly intrusive noise wise. The Zefyr will reduce temp due to the direction of airflow, you are also paying for portability, materials (aluminium) and build quality. As i say a USB fan well placed also works and for just a few $$. With Apple portables you need to "wick" away the heat from the case as it acts as a heatsync, here the horizontal airflow works best. I also believe some have had good results with one of the CoolerMaster pads, once again the majority of the airflow is directed horizontally.

    Agreed there is something a miss, Mac`s don't shutdown unless there is over temp of the CPU/GPU, not heavy load...
     
  9. Dark Void macrumors 68030

    Dark Void

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    #9
    That's fine, I mean purchase what you want to purchase - I just thought that it looks like flashy advertising with a Mac label on it. Amazon and Newegg sell cooling pads from reputable brands for as low as $15 with solid performance.
     
  10. Queen6 macrumors 603

    Queen6

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    #10
    I know, but due to the direction of the airflow they don't work in general, if anything they can result in higher temperatures, as i have seen fan rpm`s reduce using PC type powered cooling pads and subsequently CPU/GPU temps raise, likely due to cooling only a specific area close to a sensor and not reducing case temp over all, and as i say a cheap USB fan works reasonably well if carefully place, but you might not get it in your notebook case ;)

    I have no affiliation with any company mentioned in my post, they are however products designed for Mac`s and do work well. I have tried a multitude of cooling pads over the years and for the most part the PC orientated ones dont do 'jack" as a rule...
     
  11. qwerty123123 thread starter macrumors newbie

    Joined:
    Apr 19, 2012
    #11
    Thanks for the response guys. I think mine might be a hardware problem and i sceduled a appointment with the geniuses. I have apple care so hopefully they should be able to fix it. when i do get my MBP back ill make a updated post.
     
  12. afinch1992 macrumors 6502

    afinch1992

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    Dallas, Tx
    #12
    best of luck!
     

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