Is there an alternative to SMC fan control?

Discussion in 'Mac Pro' started by mjsmke, Oct 14, 2010.

  1. mjsmke macrumors 6502a

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    #1
    I have tried using SMC fan control in the past but the minimum fan speed was 1000rpm which i found too high when i didnt need the extra cooling (noisy too).

    Is there an alternative to SMC fan control so i can increase the speed when needed then reduce them to the original speeds during idle?
     
  2. spinnerlys Guest

    spinnerlys

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    #2
    There is also FanControl for Desktop Macs, but the minimum fan speeds for the following components on an iMac are:

    CPU - 1200 RPM
    HDD - 1200 RPM
    ODD - 1000 RPM

    If you want to change that, FanControl might be able to help, but it won't shut them off.
     
  3. Hellhammer Moderator

    Hellhammer

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  4. mjsmke thread starter macrumors 6502a

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    #4
    Thanks for the replies. Ill have a look at Fan Control. Though the minimum speeds look a little high.
     
  5. spinnerlys Guest

    spinnerlys

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    #5
    The minimum speeds I listed are meant for the iMac with its three fans, I don't know about the Mac Pro though. Maybe a MRoogle search will help you find more information.
     
  6. diazj3 macrumors 6502a

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    #6
    To which computer are you referring to? SMC Fan control sets default minimum speeds of 600 and 800 on my 2009 2.66 quad...
     
  7. mjsmke thread starter macrumors 6502a

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    #7
    I tried it in June on a 2009 Mac Pro but the minimun fan speeds were 1000rpm. Maybe there is an updated version?
     
  8. ahavriluk macrumors member

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  9. diazj3 macrumors 6502a

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    #9
    I'm running ver. 2.2.2 which is the latest version. Hasn't changed in a long time.

    Are you sure the 1000 rpm are the real minimum, or maybe you inadvertently modified the speed for the Default setting?
     
  10. mjsmke thread starter macrumors 6502a

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    #10
    I can't remember but i couldn't reduce the speed to bellow 1000rpm. just reluctant to try as it was a pain to uninstall if it doesn't work
    .
     
  11. mjsmke thread starter macrumors 6502a

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    #11
    Does it? Where do you set the speeds?
     
  12. johnnymg macrumors 65816

    johnnymg

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    #12
    Don't think you can.

    Here's the help section on the fan display:

    Fans
    The Fans section shows the fan sensors in your Mac. You can filter what’s shown from the “Display” preferences on the back of the widget. Please note that some PPC Macs are not supported by iStat pro.
     
  13. diazj3 macrumors 6502a

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    #13
    well... I'd suggest you check it out again... my guess is that either you had an older version, or that the default setting was altered. The minimum fan speed is defined by firmware - so SMCFC does not alter that. It reads the mac model and sets the min speed accordingly.

    Uninstalling is not hard at all... just drag the app and prefs files to the trash. But for easily locating all the associated files during removal, use AppCleaner (free/donation).

    About alternatives, IME, I dont like Fan Control too much - my feeling is that its adaptive design will wear the fans lifespam out faster, by continually variating the fan speeds according to the temperature.

    Cheers!
     
  14. mjsmke thread starter macrumors 6502a

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    #14
    Thanks for the advice.:) I'll try SMCFC again tonight or tomorrow.
     
  15. WardC macrumors 68030

    WardC

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    #15
    I think this guy has found the alternative...

    [​IMG]
     
  16. Inconsequential macrumors 68000

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    #16
  17. mjsmke thread starter macrumors 6502a

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    #17
    That technology is way too advanced for me :p.

    ok, i downloaded SMCFC 2.2.2 and it works. I must have used an older version before, or just done something wrong. Before all the fans sped up instantly and when i deleted the app + all contents i had to do a restart + SMC reset to put tha fans back to normal. The 2.2.2 verion works perfectly + i can quit the app to use the system fan control.

    Thanks for all the advice. :)
     
  18. badlydrawn macrumors newbie

    badlydrawn

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    #18
    Under sensors, you can select 'default' and 'medium'. Don't know about setting your own speed. Anyways glad you got smc running.
     
  19. mjsmke thread starter macrumors 6502a

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    #19
    I cant see that option.

    Just wondering. now i have installed SMFC if i leave the settings on the default minimum will OSX still increase fan speed if it needs to? or are the fans now totally manual? It seems if i create a profile and set the fans to a faster speed then quit SMCFC the fans dont go back to the OSX default.
     
  20. ahavriluk macrumors member

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    #20

    In settings, there is section for sensor settings.

    [​IMG]

    See 'Edit Rules' button next to "Fan speed control' check box?

    You go into rules and you can setup different presets for fan speeds. By default it has 'Default' preset and 'Medium' one. You can activate them from sensor menu drop down.

    I hope it helps.
     
  21. mjsmke thread starter macrumors 6502a

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    #21
    Thanks.

    I didnt know there was a newer version out. I have the older version. The last one before it stopped being free.

    I'll look for a crack for it.
     
  22. mjsmke thread starter macrumors 6502a

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    #22
    Ok now i'm stuck. Tried paying for it but they wont accept my cards. And cannot find a crack for it.
     
  23. diazj3 macrumors 6502a

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    #23
    SMC only gives you the ability to manually set new base speed profiles for the 5 fans in your MP... e.g. if you create one that increases them by 15%, that means the fans will now run at that speed minimum... but they will still react with higher speeds under heavy load and higher temperatures.

    In my case, I created 5 customized profiles... I modified the default one with a very slight increase in the exhaust fan to avoid resonance; the others are focused on various % increases to the GPU, CPU and PS fans. I then manually select such profiles from the menubar icon, depending on what I'm going to stress my machine with, so I won't even give temperature a chance to raise.

    The issue has always been that the speed increase reactions that Apple sets in their firmware are not very conservative when it comes to keeping the temperature down. Some feel the fans usually react too little, too late. And then there was the audio, firewire and flash issues... hence the need for SMC.

    But SMC is not a fully automated tool by any means. I really wish there was an more automated solution, that would allow individual fan speed increase profiles in a stepped/timed way, depending in the temperatures reported by the different sensors in the MP.


    Correct: if you set SMC to a certain profile and then quit SMC, the fans stay on the base speed defined by the profile. So yes, you'd have to keep SMC working if you want to vary the base speeds.

    Let us know if the iStat fan speed app works better...

    cheers!
     
  24. mjsmke thread starter macrumors 6502a

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    #24
    Ok, got iStat menus 3 working (had to use paypal in the end). The fan control option doesnt seem to work on a 2009 Mac Pro. Even if it did the SMCFC is quicker to use. All SMCFC needs is an option to set the fan speeds to increase at your desired temperatures.
     
  25. Inconsequential macrumors 68000

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    #25
    The edited software I posted above does what you want....
     

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