Huge CPU temperature, low fan rpm, is it normal?

Hello!
I'm a new mac user, I have a new macbook 2.0Ghz, 4GB Ram and a hdd 160Gb.
I compared the temperatures of my mac with other macs and my values are huge.
In normal CPU usage I get 60ºC, but when I turn on my virtual machine the CPU temp can go to 84ºC and the fan is only at 3265rpm!
For example, now I got CPU usage of 70% and it's at 80ºC and the fan is at 2456rpm, is it normal?
Above there is a list of CPU temp and respectively fan rpm
84ºC - 3265rpm
80ºC - 2427rpm
78ºC - 2004rpm
60ºC - 2000rpm
45ºC - 1998rpm
40ºC - 2001rpm

Hello All, I have a early 2008 Macbook 4.1, with a 2.1 Ghz, 4G ram, and a 7200 RPM HD, and I am also frequently between 60-85 deg C. (140 - 185 deg F.)
My fans runs between 1800 rpm up to 6200 at higher CPU temps.
Sometimes I wonder if running the Macbooks wifi, bluetooth, and an external 24" monitor, increases the interior temp?
I have had on occasion, doing some encoding with a slew of programs running, had the temp up to 96 deg C (205 deg F), and it still was running fine, mind you I was freaking out.
But when I checked on the Intel site for max CPU temp for my model processor T8300, it said that it was 105 deg C as the maximum. 105 deg C converts to which is 221 deg F.
I figure that they must have some kind of CPU shutdown/slowdown mechanism so if it gets too hot.
And if it doesn't, my 3 year AppleCare will have to deal with it.
I am more interested in the Hard Drive temp, since if that cooks, there goes my "restore plan" into action. But it generally stays around 90 - 100 deg F.
My buddy has an iMac, and it runs between 70-100 deg F. Go figure, it's cold as ice
Just thought I would share my 2 cents worth, IAN...

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I've had this toshiba Satellite C855 since march this year. it's only recently that the CPU temp and Fan speeds have been worrying me.
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In my opinion there is no reason for panic. T is logic that under stress CPU activity is higher and CPU produces more heat. Notebook must be cooled down properly so sensors that control cooling fans register growing temperature and cooling fans will run on higher speed.
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My cpu temperature showing 84'c. is it normal, my cpu temperature showing 84'c. is it normal

temperature of mu macbook pro showing is 84'c. is it normal?
I can't keep my laptop on my lap as it is very warm.

Before downloading SMC Fan Control as per the suggestion of ivanhernandezeuropa you should check first why the computer is showing such temperatures. My first step would be to use Activity Monitor to check if there were a runaway process. Flash is a possible culprit. If there is some application using large amounts of CPU capacity, it may be a good idea to quit that (if necessary Force Quit) then see how the temperatures and fans react.
I have the 13" and the 15" MacBook Pro and these both get a bit warm sometimes. Usually, the cause is a process, like mds which may appear when Spotlight is indexing; and of course Flash (often a problem).
Putting the notebook computer on your lap is not really recommended and recent research suggests that you could suffer more than burned knees.
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I'm watching youtube videos on my mac - under Windows XP (bootcamp) - I'm monitoring my CPU usage while watching the videos because my fan is spinning at full speed - yet the CPU is not working hard - about 5 to 10%. Does anyone know why the computer is getting hot and fans spinning faster if CPU load is still very low? Is it possible that I only see one of the cores in the windows monitoring system? I press control alt delete to access the info.
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Hi tcdm1972,
A lot of postsfrom fellow users report their fan kicking out loud mostly when watching or using application that related with video or streaming video.
I'm not an apple tech, so I guess that fan also try to cool down the GPU chip sets since it is dinamically adjusted in and out of allocated memory and rendering or streaming video to the screen and become hot as well. (I could be wrong).
And most of the time the fan kicking when macbook plugged with mag safe (processor runs optimal clock speed).
Hope other user have different opinion.
Good Luck.

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USB operations involves quite a bit of CPU action, Elphidieus.
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Dear All,
> I have just installed a Sun PCi II card and am
running it under Solaris 10 all seems to be working
fine.
>
> Looking at the environmental stuff in the BIOS
revealed that the CPU Temperature is 94*C and the CPU
Fan Speed is 0 RPM. Should I be worried ?
>
> Do you think the fan has failed or is it just a bogus
report. I would have thought if the chip got that
hot the system would shutdown.
>
> Thanks in advance,
> Hugh
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Quote from: 7777777 on 14-April-12, 20:29:36
Just checked again, Smart Fan works at the bios level too, so just the temperature shown is wrong (50-52) instead of ~ 30. I am happy customer now. Thanks again for your help.
This is pretty normal behaviour, my bios temp is ~40°C - 42°C, whilst in Windows the idle temp is ~25°C (depending all on ambient temps).
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Tweak the balance between fan speed and CPU temperature / Dell M6400?

Hi all,
I have a Dell Precision M6400 17" laptop. It runs really well on Arch, but is a bit noisy. It has always been noisy, btw, but I recently noticed that the CPU fan was blowing a lot of air even though the CPU temperature is lower than 70°C. I also have a macbook air, and its CPU runs at 70°C all the time, which seems to be normal. I would like my m6400 to behave similarly, and I'm sure someone here know how to change that
Hardware configuration
* Intel(R) Core(TM)2 Extreme CPU Q9300 @ 2.53GHz
* Quadro FX 2700M (G94M)
* 8Go RAM
* 2 hard drives
lspci output
00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03)
00:01.0 PCI bridge: Intel Corporation 4 Series Chipset PCI Express Root Port (rev 03)
00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02)
00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02)
00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02)
00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 4 (rev 02)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02)
00:1c.5 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 6 (rev 02)
00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02)
00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation ICH9M-E LPC Interface Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI mode] (rev 02)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)
01:00.0 VGA compatible controller: NVIDIA Corporation G94M [Quadro FX 2700M] (rev a1)
03:01.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba)
03:01.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04)
03:01.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 21)
03:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 11)
03:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 11)
09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5761e Gigabit Ethernet PCIe (rev 10)
0c:00.0 Network controller: Intel Corporation Ultimate N WiFi Link 5300
output of sensors, idle:
acpitz-virtual-0
Adapter: Virtual device
temp1: +45.5°C (crit = +107.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +51.0°C (high = +105.0°C, crit = +105.0°C)
Core 1: +51.0°C (high = +105.0°C, crit = +105.0°C)
Core 2: +48.0°C (high = +105.0°C, crit = +105.0°C)
Core 3: +46.0°C (high = +105.0°C, crit = +105.0°C)
output of sensors when I start interacting (light browsing, mail, chat):
acpitz-virtual-0
Adapter: Virtual device
temp1: +59.5°C (crit = +107.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +63.0°C (high = +105.0°C, crit = +105.0°C)
Core 1: +63.0°C (high = +105.0°C, crit = +105.0°C)
Core 2: +62.0°C (high = +105.0°C, crit = +105.0°C)
Core 3: +63.0°C (high = +105.0°C, crit = +105.0°C)
When I start the laptop, its CPU fan stays at its minimal speed only for 1 or 2 minutes, then increases its rotation speed to a second level. It reaches it maximal speed only under heavy load, when the CPU reaches >80-95°C. I would rather let the CPU run a bit hotter before the fan starts to blow: let's say the fan could enter its intermediary speed between 70°C and 85°C instead of 55-80°C, and blow at is its maximum speed beyond that.
I checked the Fan Speed Control wiki page, but lm-sensors is not able to show me the status of the fans. Any idea ?
Aurel.
PS: the temperature of the GPU is not reported by sensors, and nvidia-settings reports around 60°C. Its dedicated fan is very quiet.

aurelieng wrote:
Hi all,
I have a Dell Precision M6400 17" laptop. It runs really well on Arch, but is a bit noisy. It has always been noisy, btw, but I recently noticed that the CPU fan was blowing a lot of air even though the CPU temperature is lower than 70°C. I also have a macbook air, and its CPU runs at 70°C all the time, which seems to be normal. I would like my m6400 to behave similarly, and I'm sure someone here know how to change that
Hi aurelieng,
I'm in the same situation from at least 1 month ( INTEL CORE 2 EXTREME X9100, 3.06GHz with 8GB ram, one solid state disk 128 GB, and one sata disk 500GB)
My dell M6400 has dual boot: ubuntu and windows7. The fan works a lot and continuosly in both environment and this is the reason because I have doubt that the origin of the problem is in hardware problem?
output of sensors when I start interacting (light browsing, mail, chat):
acpitz-virtual-0
Adapter: Virtual device
temp1: +41.5°C (crit = +107.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +41.0°C (high = +105.0°C, crit = +105.0°C)
Core 1: +41.0°C (high = +105.0°C, crit = +105.0°C)
Last edited by ginard (2012-11-16 18:09:19)

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
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Just switched the Macbook on again and only have Safari open. The system is sitting at a steady 75'c with CPU uage at 8% and both fans running at around 2200rpm. This is really strange as the Macbook doesn't seem particularly warm anywhere on the case either.
Is it possible that both temperature monitor apps are giving false readings? Is there any way that these can be 'reset'?

CPU temperature increases considerably as well as fan speed after upgrading to 10.7.4

I'm running an 8,1 MacBook Pro and just upgraded to 10.7.4. While idle, my CPU temperature now stands at around 180 degrees Fahrenheit and my fan runs at 4000+ rpm. Is anyone else having these issues? How should I try to fix?

Start here:
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How much green? under 1/6 pie?
How many pageouts?
When you are comfortable with that information switch to this view:
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Huge CPU temperature, low fan rpm, is it normal?

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