High fan speeds and high GPU temperature during idle

Hi,
I'm hearing slight similar problems around this subject but this one seems to be obscure.
My iMac 20inch (Early 2008 - 8,1) has just passed by the 3 year mark now and only yesterday just suddenly started haven't this weird gain in fan speeds mainly on the CPU.
Checking the temperature in iStat shows that its coming mainly from the GPU (GPU - 79c / GPU diode - 91c / GPU heatsink - 83c) and that's from looking as I type this.
I've done the SMC reset a few times and the PRAM reset too, but that's only managed to make things worse...occasionally on startup after the resets the screen will blank out and ask me to reset.
Below are screenshots from istats of the state of my iMac during idle:
Hope someone can help and this be of some help to others in the same situation.

I think a SMC reset will handle this for you. If not then also do a PRAM reset.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

Similar Messages

About the rules (logic) between the fan speed and the temperatures?

Hello All,
Well, I've had a bad experience with my MBP last week: my motherboard busted and had to replace it... Expensive part to replace!
After thinking about the reasons why it failed, my attention has been directed toward a possible motherboard overheating, which might have damaged the motherboard.
I've installed the iStat Pro widget and regularly monitor temperatures displayed vs. fan speed. I do get a bit nervous when I see a 84 oC CPU temperature and idle (2000 rpm) fan speeds. My GPU temperature is also sometimes in that range.
My questions are:
1) does anybody know the rules (logic) between the various temperatures (CPU, CPU heatsink, GPU, GPU heatsink, enclosure, HD, etc.) and the fan speeds?
2) other than with the fews apps out there, is there a way to customize the rules? Is there a text file or a plist file somewhere where I can change the rules?
Thanks!

If your idle speeds are 2000 rpm, you have one of the original Core Duo MBPs. For me, I see fans on my 17" CD MBP speeding up once temps get into the upper 70s °C.
Apps like smcFanControl allow you to alter the setpoints. Note that some users who installed smcFanControl, then uninstalled it, report symptoms like yours - namely, the fans remain at idle no matter how hight the temps get, until a thermal shutdown is triggered (somewhere close to 100 °C).

MSI 5900XT-VTD Fan speed and GPU Temperature

Hello,
I wonder if someone can tell me how can i know the temperature and fan speed of my MSI Gforce FX 5900 XT-VTD.
I have installed 3D Turbo Experience (MSI utility) but when i get the window,i'm only able to see the Core and Mem Speed(I can modify them).The fan speed and core temperature are not active.....
Is it normal ?..

that card doesnt surport monitoring of temps and fan speed

IMac (early 2009), 3.06 GHz, ATI 4850 - fan speed and temperature questions

Well, so I downloaded and installed Temperature Monitor and iMac Fan Control - mainly for observational purposes and not for toying around with the fan speeds and I've got some questions. Mind you, I haven't tampered at all with the fan speed settings, just installed Fan Control. Here are my readings (while browsing the internet with Safari and doing a chat via iChat):
Fan Speeds:
CPU fan (desired) 1300 RPM / (current) 1530 RPM
HD fan (desired) 2100 RPM / (current) 2099 RPM
DVD fan (desired) 1300 / 1298 RPM
Temperatures:
CPU Heatsink: 92°F
Internal HD: 108°F
Internal DVD: 95°F
GPU Heatsink: 107°F
Are these, under the circumstances, normal readings?
Thanks in advance for your replies.

Your welcome and no problem. I would say only the Apple engineers can tell you why the fans are set to those speeds however my best guess is the obvious they found those speeds the closest to keeping the temps at an optimum operating temperature. I found when I'm doing graphics intensive work my machine heats up but quickly cools down when I'm done.

[Solved] lm-sensors fan speeds and voltage.

After installing lm-sensors and running sensors-detect I have the following readings from sensors;
~$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +42.0°C (crit = +80.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +47.0°C (high = +78.0°C, crit = +100.0°C)
coretemp-isa-0001
Adapter: ISA adapter
Core 1: +42.0°C (high = +78.0°C, crit = +100.0°C)
I am sure in the recent past I was able to retrieve fan speed and voltage readings from this machine;
|Abit FP-IN9 SLI | Intel(R) Core(TM)2 Duo CPU [email protected] | GeForce 9800 GT |
I suspect this is something that I am doing wrong (or is it a kernel issue??) as I have the same problem on a similar machine running Ubuntu 10.04.
Any ideas appreciated.
Last edited by ancleessen4 (2010-03-09 08:31:15)

Hi graysky,
You were spot on!
I followed the instructions in the wiki article to add
acpi_enforce_resources=lax
to /boot/grub/menu.lst
Reboot...
Voila!
[neil@archbox ~]$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +30.0°C (crit = +80.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Core 0: +36.0°C (high = +78.0°C, crit = +100.0°C)
coretemp-isa-0001
Adapter: ISA adapter
Core 1: +34.0°C (high = +78.0°C, crit = +100.0°C)
w83627dhg-isa-0290
Adapter: ISA adapter
Vcore: +1.12 V (min = +0.00 V, max = +1.74 V)
in1: +0.91 V (min = +0.51 V, max = +0.21 V) ALARM
AVCC: +3.30 V (min = +2.98 V, max = +3.63 V)
VCC: +3.30 V (min = +2.98 V, max = +3.63 V)
in4: +1.10 V (min = +0.00 V, max = +0.14 V) ALARM
in5: +1.20 V (min = +0.13 V, max = +0.00 V) ALARM
in6: +1.58 V (min = +0.02 V, max = +0.00 V) ALARM
3VSB: +3.23 V (min = +2.98 V, max = +3.63 V)
Vbat: +3.01 V (min = +2.70 V, max = +3.30 V)
fan1: 0 RPM (min = 340 RPM, div = 128) ALARM
fan2: 811 RPM (min = 332 RPM, div = 16)
fan3: 0 RPM (min = 340 RPM, div = 128) ALARM
fan4: 0 RPM (min = 340 RPM, div = 128) ALARM
fan5: 0 RPM (min = 527 RPM, div = 128) ALARM
temp1: +28.0°C (high = +72.0°C, hyst = +0.0°C) sensor = thermistor
temp2: +29.0°C (high = +70.0°C, hyst = +65.0°C) sensor = diode
temp3: +38.5°C (high = +70.0°C, hyst = +65.0°C) sensor = thermistor
cpu0_vid: +0.000 V
[neil@archbox ~]$
:D

Fan Speeds, and Mirror Raid with New Internal Hard Drive

Regards,
I recently installed and formatted a new hard drive in my PowerMac dual 2.3 ghz computer and I have a few questions.
1. Now that there are two hard drives do I need to do anything to ensure that the fan on my computer can keep them cool? I think the fans I have in the hard drive bay is enough, but I do not know if they will automatically set themselves to run properly. I can monitor the fan speeds and temp from iStat pro, but do not remember what level the temperature was before installing the new one.
2. Given that my new drive is a SeaDisc hard drive and the older one is a Western Digital, will this cause any problems in creating a mirrored RAID. I believe that both are 7200rpm drives, and my second hard drive is a little larger (I will just have unused space after making the RAID). I am concerned with the fact that these two drives are from two different manufactures. Will this cause problems or drastically slow down the reading and writing of data? Has anyone else experienced problems in making a mirrored RAID from two hard drives that are not exact matches, and even come from different manufacturers?
Any advice will help.
Thanks
earpshmael

Hi earpshmael;
Generally when creating RAID arrays the more similar the drive the less problems you tend to have.
The real question is exactly why do you want or need RAID?
I think so many people seem to think that RAID will solve all of their problem. I hate to tell you the bad news but it will not.
Generally there are to varieties of RAID available using the software RAID built into OS X which are 0 and 1. RAID 0 or stripling is generally for moving large file rapidly for applications like HD video. It usually doesn't help the OS. RAID 1 or mirroring is for protection from drive failure. It is not a valid backup solution.
Allan

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/
Actually how accurate is the temp reading on HWMonitor for your MSI board? One thing I noticed is that w/ Coretemeter the temp reading was around 48-50c on Rig#1 and almost 58-60c on Rig#2 (That's my HTPC w/ EXTREMELY tight spacings so still work in progress as far as cooling's concern!) but using HWMonitor I got 31c CONSISTENTLY on both rigs! I'll love to think that I'm indeed running this cool but feeling the exhaust air, I think this 31c reading is not real...

Imac high fan speed and goes to sleep 10sec after wake-up

Hi,
Since today my imac's fan speed is high (optical fan and cpu fan speed at: 4000rpm)
Done a hardware test wich gives me 4SNS/1/40000001:IDSR-0.000 indicating something with logic board. According to istat all my temperatures are below 35°C (95°F). istat has readings for the cpu and optical drive temp (both around 26°C)
On top of that if I put my imac to sleep after wakeup (give or take) 10sec later it would go to sleep again. tried the smc reset procedure. no success
Any other tricks to try or just go for an exchange? (imac was bought on 2feb2010)

I've had this problem since replacing the MLB in my iMac a few weeks ago. Initially brought in for repair when the CPU fan came on at 4k rpm and stayed on even after SMC reset and nvram reset. First replacement MLB was a dud, second corrected the fan problems. Now I'm having the sleep issue, I can't tie it to any particular process. Initially I thought it was graphics related as it would go to sleep during graphics intensive work, but yesterday it was doing it when just copying data to an external drive. The temperatures of the CPU and the GPU diode are within spec. I now use a fan controller to keep the CPU fan at 2100rpm and the HD fan at 2100rpm and I don't have the problem. From what I can tell now is that a sensor is incorrectly reporting temperatures intermittently. It may not be the MLB or the graphics card specifically, but the cable connecting the sensor to the board. I ran AHT after the last time it did this and it failed a sensor, but after running ASD on the machine it passed all the hardware. I'm bringing it back into my shop later this month and if i can remember i'll post here with the resolution, not much I can do at home beyond software diagnostics.

Kernel_task high cpu usage, high fan speed, and low cpu tempterature

Hi,
I've noticed that a lot of people have been having trouble with the kernel_task process, but I couldn't quite find a situation similar to mine (most seem temperature related).
Here is the situation (15' MBP, mid-2010):
- on boot (while the apple logo is shown), the fans speed suddenly jumps, and stays there, even if the computer has been off for a while.
- boot takes a little over a minute, which is considerably slower than what I was used to before today
- when finally started-up, the activity monitors shows kernel_task using between 160-180% of the CPU!
- temperatures are shown to be around 30C, except for the mem controller at 40C (still very low temp), but the fan speed is arround 6000rpm for both fans.
- this happened out of nowhere, as I woke the mpb from sleep this morning.
Since then I've tried:
- multiple reboots
- install all updates
- uninstall flash player (some people where having trouble with that)
- empty the system cache with Onyx (reported as a cause of slow boot)
- reset PRAM
- reset SMC
- put some ice packs under the mpb to cool things even further!
And so far, nothing has worked! I've had this laptop for 1 year, and nothing had ever failed. I upgraded to lion a few weeks ago, and everything had been working fine since the upgrade. This really happened out of nowhere, and none of the many forums I have read could offer a solution, and cals to apple support do not seem to yield better results (though I scheduled a call with them at 9am this morning, we'll see).
Has anyone had a similar set of problems?
I appreciate any help or advice you may have!
Thanks!
-Sebastien

I have the same issue (2.66 2010 MBP Hi-Res Anti Glare.)
I took it to Apple Store Covent Garden, JUST within warranty.
18 days later my machine has a new Main Logic borad, heat sensors, top case, palm rest. etc.
I turned it on.
The fans kicked in. All processors at 50%, big ole kernal task.
I took it back, geniuses rest SMC and tested it under load and it was fine.
weirdly it failed diagnostics at first but then seemed fine
I came home. Fans kicked in...
I took it back. Diagnostics failed heat sensors again
Replaced logic board and heats sensors again, but more carefully this time just in case, tested again.
I took it home. FANS FANS FANS.
Last time I was in the store I was told my machine was fine and had been thoroughly tested.
In mac store, no fans.
I erased hard drive and clean installed Lion
FANS
I replaced hard drive with OCZ SSD, clean LION.
Fans
Software update
SMC
PRAM
permissions
Onyx complete clean/maintenace
FANS/CPU
switched back to Snow Leopard SSD
PRAM SMC ONYX etc.
FANS/CPU
replaced RAM, memtest-ed. fine, FANS
gonna try again but up to nearly 2 months of all my spare time trying to shut this thing up so I can sell it.

HD6850 Cyclone OC high GPU use on idle, low FPS and stutter in games

Hello,
Sometime in November I got myself a new graphics card, an MSI 6850 (this one). Beforehand I'd been using an HD4770 for several years with no problems at all.
It ran pretty perfectly for about a month and then I started getting graphics issues with Battlefield 3. Before the problems started I was regularly getting 30-40FPS at 1920x1080 and most things on High. When the issues start I seem to get 5-15FPS regardless of the resolution or quality settings, and sometimes parts of the game don't render at all (the gun doesn't render or other players don't render for a few moments and then just appear out of nowhere). I get similar problems with X3: Albion Prelude. The other tell-tale issue is that if I try to watch a DVD or live TV using Windows media centre the video is laggy and stuttery. Everything else with the machine (like sound) is fine.
What I've noticed is that if I use MSI Afterburner to keep an eye on the GPU that even basic things cause a spike in the % GPU usage. If I load media centre the % GPU usage quickly hits 100% and hovers around there. The GPU temperature stays around 45-50°C with the fan speed at 50%, so this isn't an overheating issue.
I'm using the latest Catalyst drivers, but it happened with the last version as well. A couple of times I've tried to uninstall them and reinstall them but that seems to kill the drivers in the process: the screen turns mainly black with a few sprays of colour and windows half render. If I load the machine up in safe mode at that point everything looks normal, so it seems to be a driver problem. If I try to uninstall the drivers in Safe mode via the Catalyst uninstall option it tells me that it fails to load the detection driver and the only thing in the list of installed components is one of the Microsoft C++ redistributables.
I've tried reformatting my machine and reinstalling Windows, doing clean installs of the drivers (with Driver Sweeper) and reinstalling the drivers onto a HDD instead of the SSD the OS is on. The issues just comes back after a day or two of usage.
The only odd thing I've been able to find is that DXDiag reports the card as having 2803MB of memory even though it is supposed to be a 1024MB card. I've not overclocked the card or any other part of my machine.
Small edit: if I take the HD6850 out and replace it with my old HD4770, the HD4770 doesn't have any of these problems. If I put the HD6850 back in the problems return.
If anyone has any ideas why this is happening I'd really love to hear them, it's driving me nuts.
Specs of the machine:
CPU: AMD Phenom II X3 Tri Core 720 Black Edition 2.80GHz
Motherboard: Gigabyte GA-MA790XT-UD4P (AM3)
GPU: MSI ATI Radeon HD 6850 Cyclone Power Edition 1024MB GDDR5
PSU: Cooler Master Silent Pro Modular 500W '80 Plus Bronze' Power Supply (34A on 12v)
RAM: OCZ 2x2GB DDR3 PC3-10666 Reaper HPC
OS: Windows 7 Pro 64 bit
SSD: Kingston SSDNow V+ 64GB
HDD: Samsung SpinPoint T166 HD320JK 320GB

Quote from: brewster0101 on 09-January-12, 17:20:46
Did you have afterburner loaded before these issues happened? I've read that people have noticed odd things like this with MSI's software loaded in the background.
Recently I've been loading it up first, but the issues started before I had afterburner really. I'm just using it now to keep an eye on things, but I'll try not touching AB after booting just in case.
I thought I'd fixed it after reinstalling a load of drivers, but it has come back again 24 hours or so later: I'm getting 65-75% GPU use just typing on FireFox. Damn frustrating.
I may be able to test it in someone else's machine if I can convince them to let me take over it for the coming weekend. I've no idea what to do if it isn't the card though, I've already done everything right down to a complete format and reinstall.
Update: Nope, the problems begin even without afterburner.

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)

Increasing fan speed and temperature

my temperatures and fan speeds are slowly getting higher and louder on my imac g5 2nd gen (17", w/isight, 1.9ghz). i've never noticed my fans before. the only time i ever used to notice my imac made any noise at all was in the dead of night when i shut it down and noticed the absence of noise. but a couple of months ago i started being able to hear the fans when i play world of warcraft. since then, they have slowly gotten louder and louder, and they allow my cpu temp to get higher and higher before it stops rising.
before i could hear the fans i never noticed the temp, but after i started hearing them, my cpu temp usually maxed out at around 148º. now it is allowed to get to 167º and stay there while i play wow. and the fans are so loud i have to use headphones to be able to hear the game. simply surfing the internet now causes higher temperatures and fan speeds than playing WoW did a month ago.
should i take it to a service technician to see if anything is wrong with it?

Have you ever cleaned you machine? Since it's an iSight (which is actually 3rd generation, Ambient Light is the 2nd, Rev A the 1st), you can't open it but you can vacuum the air vents, which might help.

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

3d Turbo Fan Speed And Temp Readings

Hi
I am just wondering if this is normal for a fan speed 3478 when the default is 3500 and I find the TEMP is high 52c idle. My video card is a Ti4200-TD8X (ms-8894)

That's pretty normal.
What is the case temp and room temp?
Mine read the same rpm at 45c, but it was 10 degrees cooler in here during the winter, I suspect it's right around the same.
No worries, now you can uninstall the 3d turbo and forget about it. You are one of the very few on this forum that program works for 8o

Fan speed and CPU temp

Hi There,
I have MBA 13'' Mid 2011.
I'm little bit concerened about Temp of my CPU which is 96°C, and Fan speed is around 6500rpm.
I can hear my fan all the time.
It was not like this always and i'm kind of sure that something is causing this.
I worked before with lots of apps open (itunes, photoshop, text editor, chrom, mail, parallels..) and fan and temp was not this high.
Is there way to find out what is causing this high usage?
Thanks in advanced

First execute a SMC reset:
http://support.apple.com/kb/HT3964
If no change, install istat menus.
http://bjango.com/mac/istatmenus/
Open Activity Monitor to ALL PROCESSES and CPU. Make certain that CPU displays values from high to low.
Post images of both istat menus and Activity Monitor whe the MBA has heated up.
Ciao.

High fan speeds and high GPU temperature during idle

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