What is maximum permissible iMac fan speeds?

Is a fan speed of 4600 rpm reasonable when running highly complex graphics such as a video game or iMovie?
Mister Google

4600 seems excessive. My iMac is running about that fast and it is way too loud.
bill

Similar Messages

  • IMac Fans speed

    Can i let my fans of my iMac late 2013 27Inch, 3.2GHz quad core, 1024VRAM, 8GB ram
    to run at 2640RPM? because i am playing some games and it gets too hot, but i am also worried about the fans speed if they could handle it to work every second day for 5hours at that speed?

    Default idle speed is the speed of the fan when the hardware doesn't require additional cooling. You can't go by these, since these default speeds are for this model only, but for my 21.5 iMac, the first screenshot shows the default fan speeds for three fans, and the second shows the speeds I use as a pre-set (from smcFan Control) in what I call the "hot" setting. I don't normally go much above these speeds, and if I do, it won't be for very long. But again, I have no idea what a realistic upper limit would be for your model. I just think that running the fan at 2K+ over long stretches, as you want to do, will shorten its life dramatically.
    I try to run the fans only at the maximum needed for effective cooling. If I can't cool the computer sufficiently, and at reasonable fan speeds, I just sleep it. I also run a small fan at the back of the case, which helps keep the internal temps down.
    You should get some kind of temperature monitor. This one, may or may not work in your model. It's free.

  • Intel Imac fan speed? normal ?

    Hi guys , im a new mac user and i was wondering i downloaded istat pro
    and i noticed a low humming noise when running so i lookd at the fan speed and
    the
    cpu 1200
    harddrive 1600
    optical drive 800
    im not sure if those are good temps but liek some times after using for a couple hours while just webbrowsing and listening to music i feel the heat coming from like the screen and i touch it and its pretty hot!
    an i just use it for webbrowsing and music and downloading like the only third party software i own is utorrent and handbrake..
    i posted my computer stats below
    are Overview:
    Model Name: iMac
    Model Identifier: iMac9,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 3.06 GHz
    Number Of Processors: 1
    Total Number Of Cores: 2
    L2 Cache: 6 MB
    Memory: 4 GB
    Bus Speed: 1.07 GHz
    Boot ROM Version: IM91.008D.B08
    SMC Version (system): 1.45f0
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    Type: Display
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    PCIe Lane Width: x16
    VRAM (Total): 512 MB

    Those look like normal fan speeds for the latest Macs. But you can use software that allows you to create different speed sets for different circumstances.
    I use smcFanControl. The first time you start the app it reads your Mac's default fan speeds and creates a default set. But you can create more sets with increased speeds. I live in Monterrey, Mexico with no air conditioning, just fans. It has been around 40°C everyday for weeks on end, and lately hotter. So I have a Hot set where all speeds are ramped up 200 rpms over the default speeds. And I have a Really Hot set where they are all ramped up 200 rpms more over Hot. If I see the temps edging up I usually choose the next set and increase the rpms and that usually brings the temps down to normal. If I see the temps drop down below normal I back off a set on the rpms.
    I think Handbrake is probably a bit CPU intensive, so it probably sends your temps up above their normal range when you are just surfing the net.
    BTW, rpms are not temps, those are fan speeds. Revolutions per minute.
    Dah•veed

  • IMac fan speed increased after upgrading hdd.

    iMac mid 2010 i3, I replaced stock hdd to a two terabyte western digital caviar green. After replacing the fan speed rapidly increased. I installed smc and still no resolution.

    FIXED THE ISSUE....    This took a little time, but it was a simple fix.  The LCD sensor that you have to disconnect from before removing the LCD was the issue.  After receiving HIGH CPU fan speeds, I began looking at possible issues.  First, I had [http://www.macupdate.com/app/mac/12381/temperature-monitor|Temperature Monitor] Installed.  I had all my sensors including the ambient air sensor reading.  After I upgraded my HD to a SSD I started getting HIGH CPU fan speeds, but the HD and DVD fan speeds were fine.  I looked at my Temperature Monitor and I noticed i had several Temperature Monitors not reading including the ambient Air Temperature (bare with me, these are steps to troubleshoot).  After reseting the SMC and PRAM, still nothing.  I shut down and disassembled  my IMAC again.  This time after i removed the LCD, I looked at the LCD cable that you must disconnect when removing the LCD and BAM, I saw the issue.  The wires that connect to the Motherboard from the LCD Sensor, inherently like to lay across the screw hole the Bezel attaches to.  I have a couple of pinched marked that exposed the wires and when I tighten the bezel down, it shorted the wires and caused the issue.  I cut small pieces of electrical tape and covered the bare spots.  When I reassembled the IMAC, i made sure that all my BEZEL screw holes were completely clear of any wires.  Once back together, I plugged in the IMAC, waited 5 Seconds and turned it on.  All is well.  I feel this a majority of everyones issues when they take apart their IMACS and put them back together.  THe Fan Control SOftware is good, but this was my solution that worked.  Hope this helps.

  • What are you using for Fan speed AND temp monitor?

    Thanks to Bosskiller, my rig seems to be running a bit stabler now!  Knock on wood.  Is there any program other than MSI's core center that monitor fan speed AND temp?   I used to use MBM but it's no longer being supported and CoreCenter doesn't seem all that popular here? 

    Quote from: BOSSKILLER on 25-September-08, 00:42:40
    http://www.cpuid.com/hwmonitor.php
    http://www.alcpu.com/CoreTemp/
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  • IMac fan speed

    Just bought an iMac and love it.  The only problem is that the fan is really noisy and never stops.  it is on full speed all the time.  The room is cool and all I am doing is typing currently.  It has been like this since the moment it came out of the box.  Help I am going mad, the noise is ridiculous. 

    Hi...
    Try resetting the SMC...
    Shut down the computer.
    Unplug the computer's power cord.
    Wait fifteen seconds.
    Attach the computer's power cord.
    Wait five seconds, then press the power button to turn on the computer.
    http://support.apple.com/kb/HT3964
    /Dennis

  • Heat/overheat and fan speed: worry?

    Hi
    My imac is 27 inch mid 2011
    after i use my imac for 30 min, the machine is getting really hot on top. It happens fast if i play game like Leauge og legends in windows bootcamp, but it also gets really warm when i just surf on safari/internet. So no matter what i do, as long as i use imac, it gets really warm. Can anyone tell me why it gets hot? and sometimes fan make really loud noise, like imac is going to explode or melt itself. But my imac have never shutted down caz overheat.
    Here's info of my imac:
    27 inch, mid of 2011
    Processor: 3,1 GHz Intercore i5
    Memory: 8 GB 1333 MHz DDR3
    Graphic: AMD Radeon HD 6970M 2048 MB
    Mac OS X Lion 10.7.5 (11G63)
    And here's my result of istatspro:
    CPU:
    User 1%
    System 1%
    Nice 0%
    Idle 98%
    Memory:
    Wired 793 MB
    Active 0.98 GB
    Inactive 129 MB
    Free 6.12 GB
    Disks
    Macintosh HD
    U: 58.18
    F: 204.2 GB
    Bootcamp:
    U: 105.8 GB
    F: 38.85 GB
    Network:
    In: 0 Kb/S
    Out 0Kb/S
    Temps: (This varies a bit from recently warm to after awhile - warm) Temps in celcius
    HD Macintosh: 60 C
    CPU 57 C
    Ambient 40 C
    GPU Diode 65-67 C
    GPU Heatsink 59-61 C
    Mem Controller 58 C
    Optical drive: 53 C
    Power supply 2 69 C
    Fans:
    Optical drive 2340 rpm (recently warm)  and after a while : 1441 rpm
    Hard Drive: 2400 rpm
    CPU Fan: 3797 rpm recently warm… After a while:  4198 rpm
    Whats the normal temperature and fan speed?
    And whats the reason to this heat issue?
    How can i solve this?

    My imac is on the table in the livingroom. So its not very hot in this room. Only reason of heat is the summer…  but this heat problem has been since before winter…
    do u have any tips or suggestion what i should do to solve this? 
    I dont want my imac to burn or melt inside

  • Sorry, another CPU fan speed question.

    Hi,
    Just got a new 2011 iMac 2.5 GHz Intel Core i5 21 inch. First mac and loving it so far! I can hear the fans just slightly at idle in a quiet room and checked on this forum to see what is the normal idle fan speed.
    Most of the results come back with the CPU fan running at around 938 rpm. mine is constant at 1199 rpm. A few others have this speed too, but he majority are around the 938 rpm level (some much higher). My temps also seem lower than most at idle too (due to the higher fan speed i guess).
    OP Drive 998
    HD Drive 1099
    CPU 1199
    My question/s:
    Why the difference between machine (shouldn't they be set the same in all machines with the same spec with software)?
    And is the normal??
    Thx

    Also, would I notice it being quieter with it at 938 compared to 1199?

  • MSI P6NGM-L system temperature and processor fan speed

    Hi folks,
    I've got a MSI P6NGM-L board that is reaching a system temperature of 46ºC-47ºC at everyday load (not playing games or doing heavy work... just browsing, email, text editor, etc). My case has got a frontal and rear 120mm (exaustor) fan, and my processor (Core 2 Duo E7200), an Akasa AK-965BL cooler. My graphics board is a XFX Geforce 9800GT with Zalman FC-ZV9 cooler. Overall temperature is just fine, except for the system temperature, that is 32ºC when the system is turned on and is cold, and reaches about 47ºC after some time and using. I disabled the onboard NVIDIA on BIOS, but that didn't make any difference. Is that temperature OK for my configuration, or somehow high?
    I thought about taking off the northbridge heatsink and applying Arctic Silver 5 in it, but I don't know if that would make any difference, and it would give me a big job, because I would have to take the board off... so I don't know if it's worth.
    Another question, is P6NGM-L board PWM compatible? I tried using speedfan to control the processor's temperature but it says it's at 100%, and I know the cooler is in silent operation. If so, what software should I use to control the processor fan?
    Thanks for any help

    I don't have a way to measure my room's temperature, but it's quite hot... something like 26ºC.
    I thought that with all the cooling I've got inside my case the system temp would get lower, but it is still the same under normal load, even since my case had only one exaustor and stock coolers.
    What about the processor's fan speed? Can I really change it by software? I plan to do some overclocking, so I would like to do tests with the processor cooler in full speed... I've googled all the way around, but couldn't find substancial information about P6NGM-L support for that.
    Thanks

  • MOVED: Northbridge fan speed

    This topic has been moved to AMD64 nVidia Based board.
    https://forum-en.msi.com/index.php?topic=92594.0

    I removed my NB fan on 865pe fis2r a long time ago and just kept the sink, but
    what I can remember, the fan-speed were somewhere around 6.000rpm.
    Your fan probably need some "grease" ( not the best of quality fans)
    On my P-serie boards I never had any fans mounted from the beginning.
    They came with just the heatsink.

  • Lowest fan speed on 6970 lightning in msi Ab

    What is the lowest possible fan speed for a 6970 lightning when using msi afterburner? (in % and without bios mod)

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  • What is normal fan speed & temperature? (2009 iMac)

    I recently bought a 27" iMac used, and I noticed today that the fans seem to run fast even when just looking at articles without video, which I found odd.
    Are the below stats normal? I've noticed the Optical Drive fan at around 3300rpm at times.

    If these temps are in Celsius, they seem somewhat high to me.
    The GPU and GPU diode seem unusually hot to me.
    I have the same model IMac as you and purchased used in 2011, my initial temps weren't as high as yours, but I was still uncomfortable with how hot it was running.
    I suspect a lot of dust dirt and lint may have built up inside of your iMac.
    SInce you cannot break into the iMac to clean out the dust and dirt, I recommend the  use of a vacuum cleaner with a hose and crevice tool attachment to suck, instead of blowing, the dirt out of your Mac.
    DO NOT USE CANS OF COMPRESSED AIR!!!!!
    You will only be pushing the dust, dirt and lint further into the iMac
    Power down your iMac, disconnect the power and all your connected peripheral devices, lay your iMac screen down on a soft cloth of heavy toweling and using the vacuum's crevice tool(avoid using the vacuum's brush attachments as this may cause an electrical static discharge issue) and lightly (to avoid scratching your iMac's finish) vacuum out the vents underneath the display. Also, unscrew the RAM compartment cover and vacuum the dust out of the RAM area. Vacuum the long upper vent the is across the back of your iMac. Vacuum out the CD/DVD slot and SD slot. Vacuum out all of the various connection ports on the of your Mac including the vent hole and grille that is visible through the iMac's support stand. Once done, re-setup and reconnect everything and power up your iMac and see if the temps go down.
    If no joy in getting the temps down, call an Apple Store or Apple Authorised seller/repair/service center and ask about if they do interior cleaning of IMacs and its cost and schedule an appointment to get your Mac clean and free of interior lint and dust.
    If, after a good clean out, you are still uncomfortable with the normal operating temps, as I am, you can do one and/or two things.
    The easiest and quickest solution is to run a small desktop fan from behind the iMac and let the fan blow air on the backside aluminum panel to cool down your iMac.
    The next thing you can try and use (and you'll get a lot of subjective criticism from others here on what I am about to advise) is to download a software fan controller app, like SMC Fan Control, and manually set all of your iMac's fans RPMs to a speed which gets the temps to a more comfortable level without revving the fans too high, which can act as an internal vacuum, sucking in quicker, more dust, lint and dirt inside your newly cleaned out iMac.
    I use a fan control app and do not set the RPMs for any of the fans any higher than 1500-1600 RPMs (the 2009 IMac fans usually default at 1100-1200 RPMs, so I only bring them up enough to keep the highest component temps below 60-65 degrees C.
    Good Luck to you!

  • What's normal range temperature and fan speed for a 27" iMac?

    I have a new iMac (27-inch, Late 2013), 3.4 GHz Intel Core i5, 8GBs ram, and NVIDIA GeForce GTX 775M 2048 MB.
    Smc fan control reads up to about 131°F and around 1200rpm fan. Is this within normal range? At what point should I be worried?
    Thanks

    1200 rpm is the minimum fan speed according to iStat Menus and other sources. If your fans are at the minimum that means your system is not concerned about the temperature. On my system currently the fans are at minimum (1199rpm) and the temperature is 104°F. The room ambient temperature is 74°F. Your system looks normal to me. By the way, my system is also a 27-inch late 2013 iMac with the 3.5ghz I7 CPU. The Haswell CPUs are very efficient and low power.

  • IMac (Late 2006) fan speed is 4600 rpm and nothing will change it

    I just brought my iMac 24" 2.16GHz Late 2006 back from the Apple Store today and the ODD fan is running at 4600 rpm!!! The noise it generates is way too loud. It is comparable to the wind tunnel G4 I replaced. Any thoughts on how to lower the fan speed?
    I took the iMac in on 12 Sep to repair microphone and video crashes. They repaired the mike and replaced the video card with an NVIDIA GeForce 7600GT. I picked it up on 3 Oct.
    I have SMCFan and iStat Pro installed to monitor and adjust the minimum fan speed. I tried the usual troubleshooting steps (e.g., reset PRAM, Safe Boot, ran troubleshooting utilities, etc. to no avail.
    bill

    David,
    Looking through my old posts to refresh my memory, my face is red as *I AM* mistaken:O
    http://discussions.apple.com/thread.jspa?messageID=4064287&#4064287
    I was recalling that Intel iMac users were doing the wrong SMC result three years ago (actually they were doing the SMU reset that was for the pre-Intel G-5 iMacs), and that you and I explained to them the correct way - which is of course what you recommended above:D
    Nevertheless, since there is no further risk of causing the fans to race in this instance, I would myself do the wrong SMC reset method, and if it does not work, turn right around and do it the way Apple recommends. This still might result in correcting the problem.
    By the way, it was widely reported three years ago that the SMC reset was frequently not successful on the first attempt, so the alternative is to try this harmless procedure at least several times before giving up on it.
    Message was edited by: myhighway

  • Fan Speeds and Temperatures 24" iMac 2.8GHz

    What are the default fan speeds for a 24" iMac 2.8 GHz?
    Also, what are the 'normal' temperatures for this computer?

    The default iMac profile is the best for general use. For calibration get a Spyder 3 Pro: http://spyder.datacolor.com/product-mc-s3pro.php
    George

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