CPU temperature
  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    MarK
    Posts: 641 from 2004/1/25
    From: Prague, The Cz...
    Hi all,

    i have just checked all my machines, what does display the thermal title module... and it says:

    PowerBook 1.67: 42-59 degs
    PowerMacG4 1.83: 63-66 degs (with super silent upgrade)
    PowerMacG5 2.50: 86 degs

    Do You have simmilar measurements?

    Martin.
  • »30.05.13 - 20:17
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  • Order of the Butterfly
    Order of the Butterfly
    BSzili
    Posts: 433 from 2012/6/8
    From: Hungary
    My PowerMac G5 (2.5GHz, early 2004) CPU also had similar temperature readings: 85-86 °C.
    I see the jimmies have been rustled.
  • »30.05.13 - 20:28
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  • Order of the Butterfly
    Order of the Butterfly
    zukow
    Posts: 444 from 2005/2/9
    From: Poland
    my 'broken' g5 2 GHz (doesnt work with cpu fans inside) keeps 68-71 C

    every mac can be recalibrated with ASD software.

    [ Edited by zukow 30.05.2013 - 22:46 ]
  • »30.05.13 - 21:46
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    Cego
    Posts: 531 from 2006/5/28
    From: Germany
    i have 68-71°C with my PowerMac G5 @2GHz
    Powerbook G4@1,67GHz, 2GB DDR2 Ram, Radeon 9700, 60GB SSD, MorphOS 3.7
    PowerMac Dual G5 @2.3GHz, 4GB DDR Ram, Radeon 9600XT, 2x250GB HD, MorphOS 3.7, MacOS X Leopard 10.5.8
  • »30.05.13 - 22:02
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    stephen_robinson
    Posts: 729 from 2007/4/22
    On my frankenstein Dual 2.7MB with a replacment Dual 2.0 CPU replacement, the CPU temp is running around 70-75ish, which is at least 10C higher than temperature monitor on MacOSX is saying, if I quickly reboot back into MacOSX the temperature is not high at all, which given that the fans are not kicking in suggest that the temperature shown is too high than the actual temperture.

    At least I hope so.

    NAP is enabled on the G5 isn't it?
  • »30.05.13 - 22:11
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    SoundSquare
    Posts: 1186 from 2004/12/1
    From: Paris, France
    in full load my Powerbook 5,8 1,67Ghz is going up to 60°C with fans spinning like mad : )
    around 45/46°C when browsing the web, IRC etc.
  • »30.05.13 - 22:45
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    Intuition
    Posts: 853 from 2013/5/24
    From: Englistan
    Compiling stuff whilst also downloading large files and browsing the web on my Powerbook 5,8 I get around 55-60 degrees centigrade. It idles around 40-45 degrees.
    1.67GHz 15" PowerBook G4, 1GB RAM, 128MB Radeon 9700M Pro, 64GB SSD, MorphOS 3.9

    2.7GHz DP G5, 4GB RAM, 512MB Radeon X1950 Pro, OSX 10.5.8, 500GB SSHD, MorphOS 3.9
  • »30.05.13 - 22:54
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  • Order of the Butterfly
    Order of the Butterfly
    realstar
    Posts: 275 from 2003/2/24
    From: Canada
    On my PowerMac G5 2.3Ghz I hover around 60° C on bootup and 74° C once it's on awhile.

    [ Edited by realstar 03.06.2013 - 11:29 ]
  • »31.05.13 - 01:12
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  • Order of the Butterfly
    Order of the Butterfly
    Motosampy
    Posts: 199 from 2004/8/14
    From: Järvenp&a...
    Dual G4 FW800 1.42GHz runs under MOS at 42-45 ° C , under OSX 58-60 ° C . You can hear that the fan is runnig on higher rpm under MOS.
  • »31.05.13 - 06:23
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    serge
    Posts: 724 from 2003/2/20
    PowerBook 1.67: 40-61 degs
    It dependends on which component you choose to check.

    NorthBridge is allways the most Hot for me. I tryed some applications using CPU at 100% and intensive GFX usage like Quake III



    [ Edited by serge 31.05.2013 - 17:33 ]
  • »31.05.13 - 09:52
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  • MorphOS Developer
    jacadcaps
    Posts: 1462 from 2003/3/5
    From: Canada
    Quote:

    NAP is enabled on the G5 isn't it?


    No.

    As for PowerBook temperatures, these will vary depending on the state of your hardware - the amount of dust in the fans and the quality of thermal grease conducting heat from the GPU, CPU and the NB. After replacing the original grease, the GPU should become hottest and the NB coolest (usually).
  • »03.06.13 - 08:57
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  • MorphOS Developer
    geit
    Posts: 880 from 2004/9/23
    PowerMacs G5 run at full speed. PowerBooks, iBooks and Minis do not.

    OSX is constantly switching the CPU frequencies, while MorphOS is running at max speed, so in the result both CPUs are getting hotter. One CPU is getting hotter than the other because the cooling fluid is flowing from one (the cold one) to the second, which gets the already warmed up fluid from the first CPU.

    As the temperature is in general higher than when using OSX, the fans are running faster and producinig more noise.

    If you compare two identical models with MorphOS and one is silent, while the other one is making your ears numb, then there is an issue with the cooling, the sensors or the cpu. This can be dust on cooling plates, a tollerance in sensors/cpu, a not so perfect contact of the heat pipes and the chips and of course the cooling liquid that should be replaced and the water cooling may need a clean from the inside.

    So even with two fully reworked G5 running at the same speed, it is possible you never get them equal in noise output.

    Geit

    PS. Same of course for the FAN only versions of course.

    [ Edited by geit 03.06.2013 - 11:05 ]
  • »03.06.13 - 09:52
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  • MorphOS Developer
    jacadcaps
    Posts: 1462 from 2003/3/5
    From: Canada
    Geit,

    actually, PowerBooks, minis, iBooks and G4 Power Macs do run at full speed, but support the NAP feature of the G4. Additionally, 1.67GHz PowerBooks support DFS2, meaning they run at half CPU clock when idle (and NAP as well).
  • »03.06.13 - 10:05
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    pampers
    Posts: 1043 from 2009/2/26
    From: Tczew, Poland
    Quote:

    PowerMacG5 2.50: 86 degs


    Uff, so it's not only me ;P
    MorphOS 3.x
  • »03.06.13 - 10:44
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  • Caterpillar
    Caterpillar
    waldiamiga
    Posts: 40 from 2007/7/25
    From: Kraków, Poland
    My PowerBook:
    Load 59°C
    UnLoad 41°C
    PowerBook G4 1.67GHz|2GB DDR2|ATI Radeon 9700M 128MB|SSD 80GB|TFT 17"|MorphOS 3.9
    Core i7 Notebook|WinUAE 3.x PowerPC & Icaros Desktop 2.x
  • »03.06.13 - 11:06
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  • pOS
  • Order of the Butterfly
    Order of the Butterfly
    pOS
    Posts: 191 from 2003/11/14
    From: Bavaria
    PowerMac G5 2.7 GHz: 86°-93°, when running longer even up to 102°

    @geit: Thanx for explanation. Now I know why fans under MOS run always at full speed (quite noisy). The machine is really a lot(!) faster than my G4 1.5 GHz. Watching 1080p Videos at full speed and having just 35% CPU usage is really cool. But cause of the noise I doubt the G5 will replace my G4 as my main machine. It's a pity.

    I was surprised that the temperature is already 86° immediately after switching on the machine, even if ist wasn't used for hours...
  • »03.06.13 - 11:58
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  • MorphOS Developer
    geit
    Posts: 880 from 2004/9/23
    pOS,
    Quote:

    PowerMac G5 2.7 GHz: 86°-93°, when running longer even up to 102°

    Thanx for explanation. Now I know why fans under MOS run always at full speed (quite noisy).


    You should consider a proper rework of your G5s cooling system.

    Geit
  • »03.06.13 - 15:17
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    Zylesea
    Posts: 1742 from 2003/6/4
    I think the temperatur sensor on my Powerbook is a bit weird/buggy. Under full load the temp goes up to about 58C and then sometimes jumps to 75C in a second. fan is spinning and it quickly jumps back to 58C or whatever the last shown temp before the jump to 75C was. When idle it is at about 40C (± e few Cs depending on environment temp).
    --
    http://www.via-altera.de
  • »03.06.13 - 17:33
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  • MorphOS Developer
    geit
    Posts: 880 from 2004/9/23
    Zylesea,
    Quote:

    o about 58C and then sometimes jumps to 75C in a second. fan is spinning and it quickly jumps back to 58C or whatever the last shown temp before the jump to 75C was.


    Well, first of all the temperature is updated in intervals, so you will not see any slow movement.

    Secondly you seem to have no idea how much heat a cpu can create within a second. If you take a cpu without any cooling, put your finger on the cpu and turn the computer on for a second, your finger is most likly burned.

    Geit
  • »03.06.13 - 18:55
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  • Paladin of the Pegasos
    Paladin of the Pegasos
    Zylesea
    Posts: 1742 from 2003/6/4
    Quote:

    geit schrieb:
    Zylesea,
    Quote:

    o about 58C and then sometimes jumps to 75C in a second. fan is spinning and it quickly jumps back to 58C or whatever the last shown temp before the jump to 75C was.


    Well, first of all the temperature is updated in intervals, so you will not see any slow movement.

    Secondly you seem to have no idea how much heat a cpu can create within a second. If you take a cpu without any cooling, put your finger on the cpu and turn the computer on for a second, your finger is most likly burned.

    Geit

    I am not really that clueless abot semiconductors as you may assume and know pretty well how hot a cpu can get . The funny thing is that the jump between 58C and 75C is w/o a step inbetween while it takes a while to cool down even a _single_ more degree. As much as I know about thermodynamics and current I think I would expect an exponential function, but acually I observed a step function between 58C & 75C and from and till 58C again the function is exponential as expected.
    --
    http://www.via-altera.de
  • »03.06.13 - 20:42
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    MarK
    Posts: 641 from 2004/1/25
    From: Prague, The Cz...
    Well, my 2xG5/2.5 GHz is much much quieter than my FW800 2xG4/1.8 GHz, I'd say, it's a quiet as my previous supersilent Pegasos. And when it's on it's 86 degrees, it's still pretty quiet...

    Martin.
  • »04.06.13 - 08:17
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  • rms
  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    rms
    Posts: 575 from 2004/11/27
    Quote:

    geit wrote:
    pOS,
    Quote:

    PowerMac G5 2.7 GHz: 86°-93°, when running longer even up to 102°

    Thanx for explanation. Now I know why fans under MOS run always at full speed (quite noisy).


    You should consider a proper rework of your G5s cooling system.

    Geit


    @ Geit

    And could you please tell how to do that properly? What tools are needed and can it be done by itself?

    Thanks in advance for help.

    Regards

    Christoph
  • »05.06.13 - 05:02
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  • Order of the Butterfly
    Order of the Butterfly
    Doffo
    Posts: 371 from 2010/10/14
    My Passive cooled 2.7ghz is at 86.4C when I do nothing, but when I put it under 100% load by playing a 1080P video (Which btw it can't do smoothly if you were wondering.) and it never went over 88.9c. Fans stay quiet and spin up very little.

    My other LCS 2.7ghz setup has the newer revised cooler by Panasonic, and that guy sits at 84c without doing anything, and it never goes passed 86.5c under 100% load.

    The spare 2.0 G5s I have will hover mid 40s. 8-)
    -=-=-=-
    YUUUP!
  • »05.06.13 - 05:12
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  • Priest of the Order of the Butterfly
    Priest of the Order of the Butterfly
    MarK
    Posts: 641 from 2004/1/25
    From: Prague, The Cz...
    Well, MPlayer can't play MP4 files at full speed with 100% load, but when playing avi file, with even higher bitrate, the replay is smooth at about 30-40% load, ofcourse i am talking about 1080p videos :)

    And top temperature was about 88 degs, and the machine (2xG5/2.5) wass still pretty quiet. Well, i can't hear it at all, when my 2xG4/1.8 is on :)

    Martin.

    Quote:

    Doffo wrote:
    My Passive cooled 2.7ghz is at 86.4C when I do nothing, but when I put it under 100% load by playing a 1080P video (Which btw it can't do smoothly if you were wondering.) and it never went over 88.9c. Fans stay quiet and spin up very little.

  • »05.06.13 - 06:12
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