Fans on my MBPR never spin up?

I noticed that on my macbook pro retina, i never heard the fans spin up.
I tried Prime95 to stress the CPU, temperature went up to 98°c and the fans stayed at about 2000rpm...  I immediately stopped to avoid damages.
Is this normal?

I saw that the fan speed is based on the GPU temperature and not on the CPU, which would explain this situation.
Can anyone confirm?

Similar Messages

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    I'm having problems with my new and otherwise immaculate iMac Intel 2.4 GHz. The CPU fan often spins up to 3500 rpm for no reason, even when left idle.
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    I have tried resetting PRAM and SMC many times to no avail.
    Usually putting the Mac to sleep and waking it up slows the CPU fan down again, but it will go nuts at 3500 rpms sooner or later.
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    SMCFancontrol won't help as it can't slow down fans only make them go faster.
    Apple Support suggested I'd take it in for repairs but I'm reluctant as this smells like a Leopard/Boot Camp Issue from what I gathered on the boards. Also the repair service in Denmark is outsourced to third party repairers of questionable quality.
    Any ideas?

    I got my iMac back from repairs. They said they couldn't reproducere the error which might be as it at times appear very sporadic. The fans began to spin within the first day of use after I got it home though.
    It seems that more and more users on the boards experience this problem. My theory now is that this must be a software issue as it usually begins once people update to Leopard 10.5.2.
    The problem manifests itself like this:
    The CPU-fan will start blowing at 3500 rpms for no reason (CPU-load and temperatures can be as low as can be.)
    The CPU-fan will never slow down again by itself. Even after hours of unnecessesary spinning has left the Mac freezing cold.
    Putting the iMac in sleep mode and waking it up again will temporarily slow down the CPU fan down to the usual 1200 rpms (usually for about 10 mins).
    Resetting PRAM and/or NVRAM (SMC) will not help.
    Installing SMCFancontrol will not help as it will only let you speed up the fans further - not slow them down.
    So now I really hope Apple will address this problem with a new OS X release soon.
    Still, if anyone manages to fix this problem with a hardware replacemnt please let us know.
    Cheers, Jez

  • Hello i have a problem with my macbook pro become to slow to write any thing, to do any thing and the fan is always on never stop what can i do?

    hello i have a problem with my macbook pro become to slow to write any thing, to do any thing and the fan is always on never stop what can i do?
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    There are any number of possibilies... you could have problems with runaway applications, causing your machine to overheat and setting the fans off, you could have bad fan sensors, etc.
    Open Activity Monitor (Applications>Utilities) and see if you have any apps that may be hogging the CPU. Call back.
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  • The fan on my iMac never shuts off?

    The fan on my iMac never shuts off? Would someone be able to suggest what is the probable cause of this and what can I do about it?

    Sometimes an SMC reset can help resolve this. If it fixes it but proves to be temporary a trip to the workshop may be needed:
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  • 2010 MBP 13" hard drive never spins down... ever.

    Hi Folks,
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    It's not clicking or making any of the "I'm a hard drive about to die" type noises. It's just a constant spinning hum.
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    Message was edited by: Stixer

    I don't know if anyone will click on this since I already marked it solved, but I will try it and then if not I'll start a new thread. Just don't want to clutter up the forum if I don't need to.
    So anyway, it was stated earlier in this thread that it is not possible for the internal hard drive to spin down while the computer is turned on, and that the system pref for "put hard disk to sleep (i.e. spin down) when possible" check box could only really apply to external drives.
    I'm no expert, so although I sure thought the drives in my previous Apple laptops were spun down most of the time (I'm a light user), I figured that okay, they must have just seemed like they were spinning down, and my new one must just be really noisy (even though the "noise" sounds just like my older drives did when they "spun up," but I guess they were just doing something else).
    But okay, so this morning I was reading Anandtech's really great and thorough review of the new MBP's and in the maximum battery life test they did this:
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    +Here we're simply listing to MP3s in iTunes on repeat while browsing through a series of webpages with no flash on them. Each page forwards on to the next in the series after 20 seconds.+
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    Doesn't this seem to indicate that my original understanding was correct, and that internal hard drives do have the ability to spin down under light use? It sounds like it to me. My typical usage is exactly what they are talking about above, and apparently their hard drive spins down during such use, unless I'm completely mis-understanding them. Mine also seemed to in my previous Apple laptops.
    So now I'm feeling frustrated, as I hate having an issue that I can't get to the bottom of. Whether or how I can fix it or not is secondary, but I want to understand how it is supposed to work!
    Thank you very much to anyone who reads through, and even more if you reply
    Stixer

  • My fan keeps running and never stop

    my laptop is dell studio 1458
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    the problem is that the fan of my laptop keeps running all the time and never stop.
    Is there any solution to this problem?
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    The warning is there so that people realize they need to be aware of the possible outcome if they don't properly check their fans during the setting up of the software.
    The guide even suggests to keep a constant watch on the CPU's temperature during testing, and suggests how you can immediately spin up the fans to max in case of a too high temperature:
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    Alternatively, there's a fan control deamon called dellfand. A related topic can be found here:
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    *edit*
    considering this is a dell studio, have you checked the system's bios to see if the automated fan control is enabled?
    Last edited by stefanwilkens (2011-04-29 13:03:18)

  • Migration assistant on source mac never spins forever

    I have one mac that's running 10.6.8 and another that's running 10.10.  I am trying to use migration assistant to transfer files from the old mac to the new one.  On the 10.10 machine, I can run through migration assistant, it sees the source/old mac, and it displays the 6 digit code I need to type in.
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  • Since upgrade to 10.6.7, fans speed up and never slow down

    I have an Intel iMac, 2.8 GHz i7, 8GB RAM
    Just as the subject line indicates:
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    Right now, the CPU temperature is only 100 degrees F, utilization is at 1%, and the very loud CPU fan is still running at 4000 RPM.
    I've reset the SMC multiple times, and this doesn't help.
    The most telling aspect is that in the seven months prior, the fan would slow as the machine cooled off.  Not so with 10.6.7
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    Thanks

    Resetting the SMC was my first thought, but you have done that. You might also try resetting the PRAM/NVRAM:
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  • Recently my mac has started making faint clicking noises just like a fan catching something as it spins round, it is only faint but i can notice it -any suggestions please

    Recently my mac has started making faint clicking noises just like a fan catching against something, it is only faint but loud enough to hear. any suggestions please

    While it could be a cooling fan, a noise like that is usually a sign of a dying hard drive. Back up everything immediately. Make immediate backups of any new documents you create after the full backup.

  • IPod HDD never spins down when connected to computer

    I've got a two-week old iPod.
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    Whenever my iPod is connected to my MacBook, the iPod's HDD is constantly spinning, and the backlight is always turned on. (I've got it set to turn off after 10 seconds when using it while not connected to the computer.)
    Is this always-spinning HDD/always-on backlight normal behavior for an iPod connected to a computer?
    I tried the "Five Rs," but nothing changed.

    Just got back from the Apple Store, where they gave me a replacement iPod for the one that wasn't spinning down while connected and charging to the computer.
    Got home, tried the new one--and the same thing. The backlight remains on and the hard drive spins away while it's connected to the computer.
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  • How Can I spin down fans? I can't!

    In kernel 2.6.23 times, without starting sensors or fancontrol daemons or any special module, only with laptop-mode-tools, fans were automatically spinned down when the laptop was "idle", not doing anything or only programming with vim.
    After a few time, fans are never spinned down, generating unnecessary noise and spending battery. I have tried the wiki method for controlling fans described here: http://wiki.archlinux.org/index.php/Fan_speed_control but sensors only show this to me:
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    coretemp-isa-0001
    Adapter: ISA adapter
    Core 1: +28.0°C (crit = +85.0°C)
    And pwmconfig tells me this:
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    I have searched the web and I found that there is a small bug in pwmconfig, but no more about how I can get fans spin down as before.
    Anyone has a solution for me?
    Greetings

    here's kind of a 'cheesy' way to do it lol -
    HERE

  • Should the removeable fan assembly fans be spinning?

    10 Days ago my 2.5 GHz Quad Power Mac G5 froze and I had to cut the power. Upon trying to turn it back on, it wouldn't power up so I brough it to Apple for repair.
    A few days ago I was told the logic board had been replaced but the problem wasn't totally fixed and they were awaiting another part as the problem was not totally solved. I picked it up today to find only the power supply had been replaced. Got it home, plugged it in, and there wasn't any video and after a little while some (all?) fans switched to running at full speed. It was very loud.
    Brought it back and it was immediately looked at. Initially everything was fine but thankfully after a while the video got flakey. They replaced the video card and I brought it back home.
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    By "DP2" I guess I was really saying, "I don't have a quad, which is liquid-cooled, and therefore may have different parameters for the fan behaviour than this Rev.A Dual-Processor 2GHz, (as opposed to Dual-Core 2GHz) and that said, this is the best answer I can come up with". We try to help.
    Anyway... the fans in this G5 "DP2"(but maybe not the quad) are:
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    Hope some of this helps. Post again if it doesn't.
    Of course, a few more quad users' experiences (with 10.4.6)would be even better...

  • H330 Fan Never Shuts Off

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    hi grandprix60490,
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    This question was solved.
    View Solution.

    Hello again Moyiize.
    I can't safely say if other motherboards would work or not.  However, you should be able to get the same motherboard through HP.  Here is a link to your computer's HP Part Surfer page.  You should be able to order it there.
    If you want to say thanks make sure to click the white star under my name to give me Kudos.  I really appreciate it!
    I hope you have a great evening.
    Please click the white star under my name to give me Kudos as a way to say "Thanks!"
    Click the "Accept as Solution" button if I resolve your issue.

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