CPU B Termperature as high as 176 Degrees Farenheit, Fan Very Loud

Watching Temperature Monitor, the CPU B Temperature keeps rising. When it hits 176 degrees Fahrenheit, the computer goes into sleep mode.
As the temperature goes up - the fan gets incredibly loud.
Any Suggestions.

Hi
The main fan getting louder suggests it and its response to increasing CPU temperature are both OK.
Have you checked the air inlet (lower front of case), the main fan, the heatsink and fins, and the rear grille for dust buildup?
Is there any possibility that the heatsink isn't properly seated on the CPU?
Can you check if both power supply fans are running?
Best wishes
John

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Mac mini Intel Core Duo fan very loud and runs at high speed all the time.

I purchased an "Open box" Mac mini Intel Core Duo, 1.66Ghz, 2G ram, 80G HD and SD a few days ago from Fry's.
It runs beautifully except the fan is very loud compared to any Mac my family has ever had. It is so loud that we were thinking of putting it under the desk.
The fan runs constantly, and I mean all the time, at a high speed. You can really feel the air coming out the exhaust vents. The case is always cool to the touch as is the exhaust air.
My aunt bought a similar Mac mini (But only 512Mb ram) the same day. Her's is very quiet. The case feels just slightly warm, not unlike other Mac mini's I've seen.
Should my Mac mini's fan be running this way?
Thanks,
llulua
BTW: The "open box" was sealed with a Fry's label and it said that this had a new warranty. Yet, checking the serial number, it said that it had about 260 days left. I guess Fry's is backing it?
Also, someone told me that perhaps the main wire from the fan to the logic board is disconnected.
eMac 1Ghz, iBook 500 dual usb, Mac mini 1.66Ghz Intel Core Duo 2g ram Mac OS X (10.4.8)
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Since you have 2 gigs of memory, my thoughts are that when the party (Fry's or the origianl purchaser) upgraded the memory, they neglected to reattach the wire at the front of the Mini under the IR receptor at the right front corner that regulates the fan speed. This wire must be unattached in order to upgrade the memory, and is probably why the original person brought it back, because of the fan noise resulting from failing to reattach the wire. If that wire is left unattached, the fan runs continually at high speed to protect the CPU and system in general. If you do not want to use a putty knife to open the Mini, take it back to Fry's and ask someone who is Mac savvy to open it and reattach the small plastic receptacle at the end of the wire into its socket at the right front of the machine. When I go to Fry's, I am always concerned because the employees allow people to pry keys off of the Apple notebooks, so don't expect that their employees to know or care about anything Mac.
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My macbook pro cpu temperature is too high??please tell me correct fact and information

i mistake deleting my activity.......re question...
I'm using macbook pro retina 13inch 2013 late version.
my macbook has NO external graphic card, just iris graphic.
when i was playing diablo3 or watching movie by using bypass ip address, my cpu temperature was maintained 90~100 celcius degrees.
And at the same time, my cooling fan was maintained 5800~6000 rpm.
There are two questions.
One, is my macbook temperature too high or normal level ?
Two, i know that 6200rpm is maximum speed of cooling fan. Why did fan run 5800~6000rpm, not maximum?

When processor intensive activities are taking place, temperature may reach the maximum level.
     Reset SMC.     http://support.apple.com/kb/HT3964
     Choose the method for:
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CPU temperature seems rather high

I have a Lenovo Thinkpad R61, and my temperature under normal load seems to stagnate around 50 degrees Celcius, which seems kind of high. When put under heavy load (compiling a kernel) it steadily rose to around 66 degrees celcius before I stopped the operation. While under heavy load, /proc/acpi/ibm/fan reported 3202, and under normal load now it reports 3125. Is it just me, or this CPU temperature kind of high? What can I do about it?
PS: Because it's a thinkpad, I can't use lm_sensors. thinkpad_acpi module takes care of such things.
Last edited by violagirl23 (2008-06-02 07:34:56)

[rant]
Hah, IME laptops = heaters.
Even my dinosaur P2 celeron lappy gets to 70C CPU under load BEFORE the BIOS turns on the fan.
I think the idea is to hold off running the cooling as long as possible so cpuidle/speedstep can allow the chip to cool before using battery to run the fan.
As for the AC adaptor heating up, this smacks of poor design, the PSU should be able to maintain full load + battery charging for at least as long as a full charge from empty takes. Anything else is cutting corners based on 'yeah but how often will THAT happen'.
If your ACPI setup is not doing what it should, power consumption + heat output will be excesive under no/low load but full load power is full load power, as there is nothing to turn off.
My attitude would be, set up acpi and speedstep then ignore the temps. If it cooks under load then the hardware cooling solution is rubbish.
Seriously though, your temps sound quite normal. Look up the specs for your CPU on processorfinder.intel.com (or the AMD equivalent) you will probably be surprised at how high the max temperatures are. As for the AC adaptor - Don't run full speed while the battery is charging? The damn thing should be designed to handle it.
Do try and keep the HDD cool if you can - it is spinning down when not used right? Modern HDDs generate a fair bit of heat themselves when running and there ain't much airflow around the disc in most laptops.
EDIT: your HDD temps look sweet.
Have you played with laptop_mode?
[/rant]
Steve.
Last edited by steve_v (2008-06-07 02:30:59)

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Some healthy DBs is getting disccounetced with growing replay Queue length, mounted DB is no issue.
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What's the CU level you have for your Exchange 2013? Also, please check node runner processor as Node Runner process can cause CPU utilization issue. I would also suggest to check your disk IOPs as it looks like disk IOPs issue to me as well. Thanks.
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Mdnsresponder will not quit. Consumes above 100% CPU and kills my battery. Also causes my fan to run constantly and my computer to get extremely hot. Force quitting doesn't work. It just comes back.

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CPU temperature is too high in Solaris 10 sun fire v890 machine

Hi,
I just installed Solaris 10 on a sun fire v890 machine. I used the prtdiag -v command to check the system.
However, It appears to me that the CPU temperatures is higher than the temperature range specified in the technical specification. The server is a standalone node that does not connect to the network or process anything.
Is it a problem? Thank you.
========================= Environmental Status =========================
System Temperatures (Celsius):
Device Temperature Status
CPU0 77 OK
CPU1 76 OK
CPU2 77 OK
CPU3 74 OK
MB 28 OK
IOB 24 OK
DBP0 23 OK
Environmental
AC power      200-240 VAC, 47-63 Hz, 2078 VA
Operating temperature
* 5� C to 35� C (41� F to 95� F), 20% to 80% relative humidity, non condensing, 27� C max. wet bulb
* 2.1 GHz UltraSPARC IV+ processor: ASHRAE Class 3 (35C/900m) and/or 28C/10kft
Non operating temperature      -20� C to 60� C (-4� F to 140� F), 95% at 40� C relative humidity, non condensing
Regards,
Ryan

Hi Rukbat,
Thanks for your reply.
I have displayed the verbose prtdiag -v on the v890 machine.
However, I couldn't find the hard-coded operational ranges. Could you please advise?
Hi Sun-worshiper,
I executed the command and couldn't find the targeted temperature.
bash-3.00# prtpicl -v -c temperature-sensor | more
CPU0_DIE_TEMPERATURE_SENSOR (temperature-sensor, 8d00000e17)
:PSVC_FRU (8d00001ec9TBL)
| (8d0000124bH) |
:PSVC_PHYSICAL_DEVICE (8d00001da6TBL)
| (8d00001278H) |
:PSVC_PARENT (8d00001867TBL)
| (8d00000dadH) |
:PSVC_TS_OVERTEMP_LED (8d00001649TBL)
| (8d0000101aH) | (8d00000de3H) |
:HighShutdownThreshold 105
:HighWarningThreshold 100
:LowShutdownThreshold -15
:LowWarningThreshold -10
:Temperature 52
:FaultInformation NO_FAULT
:State OK
:_class temperature-sensor
:name CPU0_DIE_TEMPERATURE_SENSOR
CPU2_DIE_TEMPERATURE_SENSOR (temperature-sensor, 8d00000e35)
:PSVC_FRU (8d00001ed2TBL)
| (8d0000124bH) |
:PSVC_PHYSICAL_DEVICE (8d00001dafTBL)
| (8d00001287H) |
:PSVC_PARENT (8d00001870TBL)
| (8d00000dadH) |
:PSVC_TS_OVERTEMP_LED (8d00001655TBL)
| (8d0000101aH) | (8d00000de3H) |
:HighShutdownThreshold 105
:HighWarningThreshold 100
:LowShutdownThreshold -15
:LowWarningThreshold -10
:Temperature 52
:FaultInformation NO_FAULT
:State OK
:_class temperature-sensor
:name CPU2_DIE_TEMPERATURE_SENSOR
MB_AMB_TEMPERATURE_SENSOR (temperature-sensor, 8d00000e8f)
:PSVC_FRU (8d00001ef6TBL)
| (8d0000125aH) |
:PSVC_PHYSICAL_DEVICE (8d00001dcaTBL)
| (8d000012f0H) |
:PSVC_PARENT (8d0000188bTBL)
| (8d00000b34H) |
:PSVC_TS_OVERTEMP_LED (8d00001679TBL)
| (8d0000101aH) |
:HighShutdownThreshold 75
:HighWarningThreshold 70
:LowShutdownThreshold -15
:LowWarningThreshold -10
:Temperature 28
:FaultInformation NO_FAULT
:State OK
:_class temperature-sensor
:name MB_AMB_TEMPERATURE_SENSOR
IOB_AMB_TEMPERATURE_SENSOR (temperature-sensor, 8d00000e99)
:PSVC_FRU (8d00001eedTBL)
| (8d0000125fH) |
:PSVC_PHYSICAL_DEVICE (8d00001dcdTBL)
| (8d000012f0H) |
:PSVC_PARENT (8d0000188eTBL)
| (8d00000b34H) |
:PSVC_TS_OVERTEMP_LED (8d0000167cTBL)
| (8d00001014H) |
:HighShutdownThreshold 53
:HighWarningThreshold 48
:LowShutdownThreshold -15
:LowWarningThreshold -10
:Temperature 25
:FaultInformation NO_FAULT
:State OK
:_class temperature-sensor
:name IOB_AMB_TEMPERATURE_SENSOR
DBP0_AMB_TEMPERATURE_SENSOR (temperature-sensor, 8d00000ed9)
:PSVC_FRU (8d00001ef0TBL)
| (8d00001322H) |
:PSVC_PHYSICAL_DEVICE (8d00001dd0TBL)
| (8d00001304H) |
:PSVC_PARENT (8d000018afTBL)
| (8d00000eadH) |
:PSVC_TS_OVERTEMP_LED (8d0000167fTBL)
| (8d00001014H) |
:HighShutdownThreshold 55
:HighWarningThreshold 51
:LowShutdownThreshold -15
:LowWarningThreshold -10
:Temperature 26
:FaultInformation NO_FAULT
:State OK
:_class temperature-sensor
:name DBP0_AMB_TEMPERATURE_SENSOR
Regards,
Ryan
Edited by: puikeong on Mar 5, 2008 6:45 PM
Edited by: puikeong on Mar 5, 2008 6:47 PM

Why the CPU temperature is so high?

My NB Model #MB466, the CPU temperature is 40-50C under normal running and the fan is 2000rpm (I use iStat). When the CPU usage is about 80%, the temperature goes up to 70 or 80C, I can feel it, especially the bottom area of the screen, and the fan goes up to 4000rpm.
Is this normal?

My new Aluminum MacBook can get pretty hot when I play Spore or use an iTunes visualizer. The hottest I've seen (according to iStat Menus) is 194 degrees fahrenheit and 5637 rpm. I think they won't go too much farther. If something meets the system requirements, it should be fine.

My cpu tempreture is so high?

i am just working with Open office and my CPU tempreture is 75 c and 5676 rpm why my fan is working so loud?

My new Aluminum MacBook can get pretty hot when I play Spore or use an iTunes visualizer. The hottest I've seen (according to iStat Menus) is 194 degrees fahrenheit and 5637 rpm. I think they won't go too much farther. If something meets the system requirements, it should be fine.

Is it normal for Idle CPU Temp to be high at first?

Is there some type of break-in period when you first put on the arctic alumina and the heatsink?
I am running a A64 3500+ non 90nm with a Swiftech MCX-64V HS and using the arctic alumina. I followed their instructions to a T. I spread it all over the HS then wiped it off then I placed a small blob in the center of the CPU cover and set the HS down on it.
I just finally got BIOS to boot up and it has been running for about 30minutes. The CPU IDLE temp goes between 41C and 45C and it seems to be fluctuating quite a bit. Will it cool down over time or is it something I should check out now?
I recall my last MOBO, an EPOX 8RDA+ with a Swiftech MCX462+ usually would hover around 36C idle.
Also I saw mentioned on a website something about changing the fan voltage to 12V instead of 7V. How can you tell what your CPU fan's voltage is and if it is 7V can you change it to 12V to increase airflow?
Thanks

1) There usually is a period of a couple of days Quote
break-in period
2) Tha Temp reading is from the winbond sensor & records temp as a function of proccessor activity. This causes rapid temp changes to be seen as CPU activity changes. It's a bit like telling you the water flow through a tap. Removal of heat depends on quality of CPU Cooler & Case cooling.(Like the capacity of plug hole in sink).
3) If your 3500 is a winchester 90Mu then check in bios that your vcore is 1.4v not 1.5v, which is the default volts for the older 130 fabrication. Higher voltage gives higher temp.
4) Quote
12V instead of 7V
- Pass
Hope this helps

2.7 GHz Intel Core i7 CPU TEMP 90c Too high?

Hi I have a mac mini (mid 2011) spec:
Processor 2.7 GHz Intel Core i7
Memory 8 GB 1333 MHz DDR3
Graphics AMD Radeon HD 6630M 256 MB
Software Mac OS X Lion 10.7.2 (11C74)
22" + 17" monitors
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thanks for your help guys,

If you are in fact only surfing web and don't have a myriad
of background apps running, then 85 to 90C is in fact to
hot.
I have a new Mac Mini Server connected to a Thunderbolt
Display and have been surfing for a couple of hours and
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(Note: room temp is 21C)
If your Mini is running that hot, the fans should be roaring!
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Message was edited by: Sorry?

Hi Dennis
I am using Temperature Monitor by Marcel Bresink and I am reporting the Graphics Processor Temperature Diode (currently 19 C but I have just woken it up).
The Graphics Processor Chip is about the same, in fact they are all roughly the same.
The Power Supply Position, which the OP referred to on my machine is 29 C.
Admittedly this is early springtime here, so I am yet to see how it goes on a hot summer's day. Previously with my eMac, which didn't have any sensor's except the SMART from the HD, using Temp Monitor reading from the HD was my only readout which I had to project to the system in general. I always tried to keep under 50 C on very hot days and when that readout got into the high 40's I would blow a fan over it.
With this new iMac there are more sensors than an intensive care unit, but as mentioned, they are all pretty uniform. I will have to see how it goes in summer, but until then I do not have any fan speed software installed.
I think if the OP's fans are blowing at 3000 rpm, (in his later post) his machine thinks it is pretty hot in there.
You say your GPU temp has run at over 70C since day one, well that must be OK then, but I cannot understand the disparity except maybe it is Temp' software giving different data readout.
As a general rule, if I can smell that 'electrical smell' of a hot piece of electrical equipment, then it is getting into the redline so to speak. By January next year I'll have a lot more experience with this current machine and its temperatures.
Graphics Processor Temperature Diode (currently 25 C) It has warmed up now.
The Power Supply Position, still 29C.
regards roam

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Hello,
I decided to sacrifice a little bit of performance for the sake of cool temperatures and silent fan. I have HP DV6, with AMD Turion RM-74 and HD4650.
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At one point or another, during games, someday Your notebook inevitably colapse. It's just not meant for gaming, no matter what the specs are...
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(ii) Balanced plan -> Change settings,
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CPU still works fast, not so fast as it is working on 100 percent, but hey, fan is silent, and if You want gaming - go to Your desktop pc, leave notebook for lighter tasks, even though the notebooks specs are high,
it simply cannot handle the heat.
Best regards.
Make it easier for other people to find solutions, by marking my answer with 'Accept as Solution', if it solves your problem.
Click on the BLUE KUDOS button on the left to say "Thanks"

CPU System usage ver high

I have a brand new macbook pro, had it about 3 wks so I'm frustrated to be having problems already. My CPU system usage stays around 89%, but my user is like 3%. Haven't downloaded any big apps or anything onto it. Imported my itunes library, not a huge one. Anyway I'm frustrated and annoyed because my computer is running very slow and it's stupid.

Yeah, I know what you're talking about, but there's nothing there that is using 89%. Right now I have 2 apps running. Activity monitor, Safari. Activity monitor is showing 3.2%, Safari 1.3%. The rest of the stuff is either 0 or 0.01.
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SystemUIServer
pboard
mdworker
loginwindow
launchd
iTunesHelper
fontd
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AppleSpell.service
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CPU B Termperature as high as 176 Degrees Farenheit, Fan Very Loud

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