My cpu stays on 3600 rpm. Therefore my fan are on 4800 rpm. Did a smc reset and al the other reset. Help me please. Apple cant help. I even clean the fan.

My cpu stays on 3600 rpm. Therefore my fan's run at 4800 rpm. Did a smc reset and al the other reset. Help me please. Apple cant help. I even clean the fan.
I have tried everything you can find on the net. From unplug the cable cord to cleaning fans. Smc reset en pram reset. Eeven more. Its a Intel imac 24 inch 2009. Help

Hooray, I think I found a solution.
Using terminal commands there actually is a way to force smcFanControl to set a tolerable max rpm for the CPU fan.
WARNING:
Be aware that this solution should only be used if you know what you're doing and you are absolutely sure the CPU fan on your iMac is indeed out of control.
Forcing a low max speed on a healthy CPU Fan with fully functioning sensors can seriously damage your Mac. You have been warned.
The solution:
Install smcFanControl
Go to the terminal and use these commands to regain control of your noisy iMac:
/Applications/smcFanControl.app/Contents/Resources/smc -k F2Mx -w 12c0
This will set the CPU Fan to max at 1200 rpm: (Oh yes!)
To revert to standard settings use:
/Applications/smcFanControl.app/Contents/Resources/smc -k F2Mx -w 3cf0
This will set CPU Fan to max at the default 3900 rpms
You might have noticed that the last 4 digits are the fan speed (in hexidecimal)
Other fan speeds you can try:
1100rpm = 1130
1500rpm = 1770
3900rpm = 3cf0
Now all I need is a way to make the setting permanent. Anyone know how to run the above terminal command automatically on bootup?

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My Early 2015 MacBook Pro fans are at 0 RPM and my cpu temperature never fluctuates

Hello all I have had a Mid 2009 macbook pro for 5 years now and just got my Early 2015 MacBook Pro. On my old macbook i used iStat and SMC fan controller religiously and everything worked great.
Now with my new Early 2015 MacBook Pro, My CPU sensor doesn't even show up in iStat, and in my top toolbar, SMC controller shows my CPU temp never moves, and my fans are at 0 RPM. I cannot hear any fans moving at all when in a completely silent room, and my ear is to the computer.
I downloaded a game to stress the CPU to see if it'd change, and it doesn't all the way up to the fans just coming on at 6000RPM and the CPU is very high like 80-90C
I have already reset my PRAM and SMC and was wondering if anyone here has been monitoring their temps and have seen the same thing?
Thanks

I also have an Early 2015 rMBP w/ i5-5287U cpu. I am using Temperature Gauge from the Mac App Store and getting similar if not slightly worse results. I'm usually Idling somewhere between 45 and 60 C with almost no activity. When I run games, forget about it (see below), temps up to 103 Celsius. I also experience almost no fans until at least 70 C, and then during gaming the heat is not coming down.
Given that the cpu is supposed to shut itself down at around 105 C, I'm thinking that the programs are not decoding the temperature sensors correctly. This is my first Mac so it's hard for me to compare performance. I expected better heat regulation. I was trying to avoid programs outside of the mac store for this type of thing, but I'm considering OGELTHORPE's suggestion for istat menus, as they do claim to support early 2015 MacBooks. Have you tried this program yet?

Fans are loud what should I replace them with and how?

Just like the subject says my fans on my power mac g5 seem to be a bit on the obnoxious loud side. Was this just with the early G5 models? Anyways I wanted to know if it would do me any good to by different fans for it. If so which fans do you recommend? How easy is it to to put onto the computer?
-jim

I think pretty much all the fans are custom made for Apple, at least that's what they look like - not at all like the typical PC fans...
Which fans are loud? You could use Hardware Monitor to show how fast they spin - and compare to these numbers of other G5 owners. Which model do you have anyway?
(Check in /Applications/Utilities/System Profiler -> Hardware Overview)
And which graphics card is installed? Cause its fan might be loud (if it has one - the default cards usually don't) - it was in my case (currently Geforce 7800 GT) as well as with my earlier G5 (dual 2.0 GHz, 2003 model, with CTO Radeon 9800 Pro 128 MB). The video card fan is replaceable if one has some experience. The rest of the G5's fans are more difficult. If a particular fan is bad, you might be able to get a replacement for it as a service part, from some mac dealer in your vicinity.
It may also help to carefully vacuum the huge heatsink on the G5 processors and air outlets in the back. The G5 must be off of course, and don't touch or even go close to the RAM or Mobo, as the vacuum machine might be electrostatically charged.
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Fans going at 6000 rpm with little cpu usage--computer too hot?

Hi,
I am not sure what normal temperatures are for my computer, but often the fans are running at 6000 rpm when the computer doesn't have all that much going on. When I am trying do anything actually demanding, the fans are running non-stop. I've also noticed that things have just been running rather slowly, with lags in mouseclicks and typing. I am not sure if these are related, or why the computer might be working so hard to complete simple tasks. Here is a picture of iStatPro showing what's going on--CPU is 95% idle and the fans are at 6000 rpm. Does anyone know if the temperatures shown are normal or what I can do to improve the situation?
Thanks!
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It seems the image cannot be enlarged.

My powerMac G5's rear fans are very loud?

Hi, I recently got a mint condition Dual 2.0 GHZ PowerMac G5. The computer boots perfectly, it's very fast even though it's got only 512MB of ram and so far, it has never crashed, I'm even posting my question with this computer, however, the rear fans are very loud, they're revving very quickly, and if I want to put it to sleep the fans are still very loud and it won't wake, I have to restart the machine. Does anybody how to fix it? I already reseted the PMU, I cleaned the entire computer with air, updated all the way to 10.4.11 since it had 10.4. Another thing I found was that when I opened the case to clean it, I noticed that a plug was loose, right near the ram. I have no idea where it should be connected or what is it for and I don't know if it's related with my problem, but I uploaded a picture of the cable to see if anybody knows where it should go.

Amed wrote:
Thank you for being quite helpful, and like you said, I checked the diagnostics on system profiler and I also got that it passed on diagnostics. I also checked my computer using techtool deluxe, it said that my CPU was working properly so I'm pretty much in doubt now. What do you think I should do next?
OK, your comment above in the singular is puzzling, and going back to your post with the System Profiler snip shows Number Of CPUs as 1. You should see the following, if both CPUs are recognized:
Machine Name:        Power Mac G5
Machine Model:        PowerMac7,3
CPU Type:                PowerPC 970 (3.0)
Number Of CPUs:    2
CPU Speed:              2 GHz
So the question is why is one of the CPUs not showing up? The system log listing points to a mismatch, which may simply mean that a thermal calibration needs to be run, but if the problem is only dealing with thermal calibration, both CPUs should show up in System Profiler. Since I haven't used Tech Tool since the days of Classic Mac, I am not familiar with how it reports things like a "missing" CPU, for instance.
Not sure whether we are dealing with a truly dead CPU here, a "wrong" CPU, or what. You can compare the EEE numbers against what should be compatible, for instance (see the DV Warehouse discussion of EEE numbers on any of the 5 CPU product pages, plus the listing of some G5 CPU modules for more information).
Finally, you can actually narrow down your model (there are two iterations with the same reported 7.3 designation) by inputting the serial number to the Chipmunk site model lookup and know for sure.

My iphone keeps randomly turning on and off by itself, but it wont stay on long enough for me to restore it on itunes...help me please :-(

my iphone keeps randomly turning on and off by itself, but it wont stay on long enough for me to restore it on itunes...help me please :-(

there must be a problem with the power button.
contact apple they will help you
Apple: 1-800-MY-APPLE

Fans are dead.. heelpp

hi..
i'm using macbook 13-inch white...
i don't know why.. but suddenly my fans are dead.. i just browsing like usual,and when i see the fan status it said exaust 0rpm..
this happen 2 weeks ago,but i already bought it to a service centre and they say nothing weird with my macbook..
so they just clean it up..
and now,it's happening again.. 0rpm.. anyone know why is this happening??
thx

HI,
Insert Installer disk and Restart, holding down the "C" key until grey Apple appears.
Go to Installer menu (Panther and earlier) or Utilities menu (Tiger and later) and launch Disk Utility.
Select your HDD (manufacturer ID) in the left panel.
Select First Aid in the Main panel.
(Check S.M.A.R.T Status of HDD at the bottom of right panel. It should say: Verified)
Click Repair Disk on the bottom right.
If DU reports disk does not need repairs quit DU and restart.
If DU reports errors Repair again and again until DU reports disk is repaired.
You could also run the Apple Hardware Test, instructions here.
http://www.thexlab.com/faqs/aht.html
Do you have AppleCare?
Carolyn

GPU temperature is above 70 C, and CPU fan is above 2400 rpm

I've had my iMac for two years now. I play a lot of games and watch a lot of HD videos. In the past week, the computer has gotten a lot hotter than usual and it stutters a lot, and I feel like the two are related.
Today while playing a game I noticed that the GPU Diode reached 70 C (using iStat Pro), which I have never seen before. Therefore, the CPU fan was at 2400 rpm.
I play a lot of games, including this same one, and I have never seen the GPU this hot before, and almost never hear the fans running so loudly and so rapidly. (I can't even recall a time when I could very clearly hear the fans running.)
Could all this be a sign to a more bigger problem?

It's all settled down by now but here were some stats I posted earlier:
HD: 53
CPU: 52
Ambient: 30
GPU Diode: 71
GPU Heatsink: 66
Mem Controller: 60
Optical Drive: 52
Power supply 2: 75
Fan speeds:
Optical drive: 1110 rpm
Hard drive: 1100 rpm
CPU fan: 1421 rpm
Which part of the iMac do I blow out the dust? Do I use compressed air (which I have) or a vacuum cleaner? Do I do it through the vent at the back/top of the iMac, or open the memory bay and do it through there (and if so, do I have to take out the memory sticks first?).

In my macbook pro 15 inch mid 2012 model, my cpu and gpu will get very hot, when gaming or rendering sometimes over 200F. The fans only spin at max about 2900 rpm, when their max is 6400. I downloaded a fan control app, but how can i fix it?

In my macbook pro 15 inch mid 2012 model, my cpu and gpu will get very hot, when gaming or rendering sometimes over 200F. The fans only spin at max about 2900 rpm, when their max is 6400. I downloaded a fan control app, but how can i fix it?

Hi rhaughan,
I see that you have concerns about your operating temperature of your computer while using resource-heavy applications such as gaming applications. I have an article that will address some of the concerns you have mentioned:
Mac notebooks: Operating temperature - Apple Support
http://support.apple.com/en-is/HT201640
While there are third-party utilities that measure the temperature of a notebook computer, it is important to understand that these utilities are not measuring the external case temperature. The actual case temperature is much lower. Never use third-party applications to diagnose possible hardware issues—instead, contact Apple or go to an Apple Retail Store or Apple Authorized Service Provider.
You should also see this article for even further information about your fans:
Learn about the fans in your Mac - Apple Support
http://support.apple.com/en-is/HT202179
Thanks for being a part of the Apple Support Communities!
Cheers,
Braden

Dual G5 cpu B fans stuck at 300 rpm

Hello,
The intake and exhaust fans of one of the CPUs of my dual G5 (June 2004) 1.8GHz are pretty much stuck at 300 rpm (as measured by iStat Pro, and you can also clearly see and feel that they run very slowly.
The result is that the fans of cpu A rev up quite often and noisily, which is annoying. It seems to be basically the same problem as described by another post (without resolution), but with the fans of CPU B stuck at 300 rpm instead of those of CPU A: http://discussions.apple.com/thread.jspa?threadID=823143 (I can also reproduce that changing from reduced to high performance momentarily increases the speed of the CPU B fans to about 600 rpm, after which they immediately fall back to 300 rpm).
X Resource Graph and iStat Pro both show that the temperature of CPU B is the same as that of CPU A right after boot up), but afterwards remains consistently higher (45°C-51°C vs 42-48°C, or 115°F-124°F vs 107°F-118°F). So it appears that the temperature sensors work fine.
I've run the hardware test cd and it did not find any errors. During testing, the fans of both cpus revved up as expected.
Any ideas?
Thanks,
Jonas

{quote:title=Drew Reece (Re:co) wrote:}{quote}
Some more things to try?
Do you have the Developer tools installed? There is a pref pane extra called processor, it allows a cpu to be turned off. It may be worth trying to see if turning off the processor has any effect on it's fan speed. If the cpu cools with no use, then you know the issue is with the controller.
There is more info http://developer.apple.com/qa/qa2001/qa1141.html
I have tried both that and setting the number of cpus to 1 via the boot args. Cpu B in that case does not get as hot as otherwise, but it's not really cold either (about a constant 46°C). Apparently, the cpu isn't really shutdown by the OS if it doesn't use it, it just doesn't get any code to run.
I also wonder what the ambient air temperatures are.
Right after bootup, about 36°C for both. After a while, about 2°C less that the cpu temperature for cpu B (presumably because its fans barely blow), and still about 36°C for cpu A.
I'd be tempted to try a clean install without istat or any other sensor reading software installed, you don't know if the software itself is part of the problem. If it is bad enough you should be able to tell from sound. My understanding is that the fans run at different speeds to avoid causing vibrations.
As I've said several times in this thread already, I have both tried with a clean install of Mac OS X 10.3.4 and with a Linux live cd (which includes full support for fan control in the G5's), and the behaviour there is identical.
Another thing to try is to take out the fans and test continuity between the connector and the fan. If you have a multimeter you could test between the connector and the fan (under the round grey sticker)
The problem is obviously not with a connector, otherwise how could the FCU spin up the fans when the Apple Hardware Test is running?
The rear fans would require removing stuff that invaildates the warranty, so you should seek out instructions for that yourself.
I doubt any G5 today is still under any kind of warranty, especially any June 2004 models. I have once before disassembled it to the point that I could access the rear fans, but it was a pain without a proper tool to pop out the plastic pin fixing the metal cover over the processor heat sinks.
Afaik, there is also no service manual online that contains the information on how to take appart the June 2004 G5's, only earlier models (which don't have that plastic pin). There are some descriptions available from people who did it themselves, but the tips they gave did not really help me (I think I spent about 30 minutes prying with very small screwdrivers, half mutilating that pin in the process)..

How many degrees of cpu, the fan start to increase rpm?

Hi guys, i have a mac mini late 2012 i5 processor. The fan is constant about 1800 rpm also when the mac is hot.
So, i am worried. How many degrees of cpu, the fan start to increase rpm?
There is a method to know if the fan working?

I have been using > http://www.crystalidea.com/macs-fan-control on my 2010 Mac Mini for several years. I use the Sensor-base algorithm to control the CPU/GPU temp's. With a lower setting of 148F (64.5C) and an upper setting of 194F (90C), the exhaust fan speed slowing ramps up from 1800rpm to around 2200rpm and the Mac Mini never goes over 160F (71C) even under a heavy load.
I don't worry about damaging the fan using only slightly elevated speeds, besides the fan in the Mac Mini is cheap and easy to replace compared to a logic board. One thing to be aware of when using any fan control-ware is the risk of greater dust accumulation. Base on that and the fact that it is dusty here in the late summer and fall, I open, check and clean inside my Mac Mini a couple of times a year.

CPU A's intake/exhaust fan stuck at 300 RPMs

Hi all,
As I write this post I'm waiting for iMovie 08 to shunt a project to the media browser so that iDVD can use it (oh it'll just be another 210 minutes or so). The fans in my DP 2.0 G5 are a-blowin' but imagine my surprise upon firing up Hardware Monitor:
CPU A: Intake Fan:*300 RPM* - Exhaust Fan: *300 RPM* - Die Temp 60.5 C - Current: 28.93 A
CPU B: Intake Fan: *2731 RPM* - Exhaust Fan: *2780 RPM* - Die Temp: 73.1 C - Current: 31.85 A
Activity monitor shows both CPUs working, unless I'm misinterpreting the info,
Once iMovie done I'll run AHT but can I assume that perhaps the sensor and/or fans are defective? Perhaps the CPU itself?
Thanks for any guidance,
Frank

Hi all,
As I write this post I'm waiting for iMovie 08 to shunt a project to the media browser so that iDVD can use it (oh it'll just be another 210 minutes or so). The fans in my DP 2.0 G5 are a-blowin' but imagine my surprise upon firing up Hardware Monitor:
CPU A: Intake Fan:*300 RPM* - Exhaust Fan: *300 RPM* - Die Temp 60.5 C - Current: 28.93 A
CPU B: Intake Fan: *2731 RPM* - Exhaust Fan: *2780 RPM* - Die Temp: 73.1 C - Current: 31.85 A
Activity monitor shows both CPUs working, unless I'm misinterpreting the info,
Once iMovie done I'll run AHT but can I assume that perhaps the sensor and/or fans are defective? Perhaps the CPU itself?
Thanks for any guidance,
Frank

CPU fan running at 3900 rpm tried everything so far.

I have an early 2008 imac running upgraded ram, Mountain Lion 10.8. I hve a CPU fan that is running at 3900 rpms. I have downloaded the SMC fan control, I have tried doing the option,command p,r. I have done all the shut down procedures. I tried ro restart in diagnostics mode but it wont restart in diagnostics mode (I tried using option D as well as just D on start up) I downloaded and tried using a shell app command with Automator that is suposed to force the fans tor run at a particular speed ie: 1200,1500,2400 etc. but it does not work. I do not have a start upd disc for Mountain Lion. Don't know what else to do.

I have tried running the hardware test I cannot get it to run starting up while holding D or starting up while holding option D. I do not have a OS X
install DVD 2.
mende1 wrote:
Welcome to Apple Support Communities
It's clear that there's a problem with your Mac, so the best you can do is to make a backup of your files and take your Mac to an Apple Store or reseller to get it repaired.
If you want to know what's failing, run Apple Hardware Test > http://support.apple.com/kb/HT1509?viewlocale=en_US&locale=en_US
In your iMac, Apple Hardware Test is included in the Mac OS X Install DVD 2, so insert it and hold the D key while your computer is starting. Disconnect all peripherals except the keyboard and mouse, choose your language, mark the box to use the extended mode and start the test. At the end of the test you will probably find an error, so copy it here

ODD and CPU fans running at high RPMs

Hello!
My iMac's ODD and CPU fans are running at unusual high speeds. If I turn the computer off and on they usually run at a normal rate but start rotating at around 3700 RPM very quickly (about 1-2 minutes after the OS X has started). The CPU load is not unusually high. The HDD fan is not affected.
I have tried SMC and PRAM resets multiple times.
27'' iMac - Mid 2010 (iMac11,3)
Intel Core i7 2,93 GHz
Boot-ROM-Version IM112.0057.B01
SMC-Version 1.59f2
Thanks!

For some reason the high fan RPMs had to do with having two desktops under mission control.

IMac cpu fan running at full rpm

hi all
A few days ago my cpu fan started running flat out. I have done the smc or whatever it is caled reset thing where you unplug the cored ect.
I have done the hardware test with no bad results.
I have checked activity monitor for cpu usage and there is nothing unusual there, so I can only guess that the cpu temp censor is faulty.
I should also add that this machine has been running non stop since mid 2007 , with the exception of the odd blackout and restart, thats pretty amazing i think.
maybe its time has finally come ;(
any clues ??
thanks

SMC is firmware and OS X is software, which has nothing to do. Furthermore, you are using a very old iMac, so SMC should not have been updated with OS X 10.10.2.
If you have tried a SMC reset and it did not work, run Apple Hardware Test (make sure you choose an extended test) to see if there is any problem with a temperature sensor or anything like this -> Using Apple Hardware Test - Apple Support
Note that you may need the DVDs that came with your Mac in order to run it. If you get an error at the end of the test, please copy it here.

My cpu stays on 3600 rpm. Therefore my fan are on 4800 rpm. Did a smc reset and al the other reset. Help me please. Apple cant help. I even clean the fan.

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