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"Core Temp" - A program for accurate Core, Core 2 and K8 CPU temperature monitoring

The-CoolestThe-Coolest Tel Aviv, Israel
edited Sep 2011 in Hardware
Download Core Temp v0.99.3

This is a new program that lets you monitor Intel's "Core", "Core 2" and all AMD K8 chips' die temperature. The temperature readings are very accurate as the data is collected from a Digital Thermal Sensor (or DTS) which is located in each individual processing core, near the hottest part.
For more information click here

There is also an article posted about Core Temp and a little background on standard thermal sensors - Article
Please help out Core Temp popularity by Digging it.

This is the first NON-BETA version, so any bugs you find concerning this program, please post in the "Bugs" section ASAP!
Any suggestions on improvements or ideas are welcome in the "Development" section.
Note 1: Please read the ReadMe!.txt file for some useful tips.
Note 2: If you can make a nice set of icons for the use of this program, please let me know. You'll be credited in the "About" box.

What's new:

Version 0.99.3 - 22th August, 2008

- Add: Correct TjMax values for 45nm Core 2 series, according to this document.

- Fix: When TjMax = 0 (undefined) "Delta to Tjunction" was not added to the temperature string.


Version 0.99.2 - 18th August, 2008

- Fix: Start with Windows option was broken in 0.99.1.
- Fix: Default color for the second system tray icon is invisible with WinXP blue theme.
- Fix: Save screenshot function would create a corrupted BMP in some viewing software.
- Fix: Nehalem does not report VID like earlier CPUs. VID field now disabled for Nehalem.
- Fix: Incorrect 65nm Turion X2 code name detection.
- Fix: Potential bug of improper K10 and up recognition.
- Fix: Enabling distance to Tj.Max with "Highest temp." for system tray would show the largest distance to Tj.Max instead of smallest.
- Fix: Vendor ID and Device ID values were reversed in the register dump file.
- Fix: 3/4 temperatures logged for Phenom X3/X4 instead of 1.

- Add: Support for Core Temp plugins. (Still in beta phase and not in GUI yet).
- Add: Full support for AMD's Puma platform CPUs (in previous version reffered to as Griffin).
- Add: Initial support for 45nm AMD processors.
- Add: Update K8 and K10 recognition code to support all currently known CPUs.
- Add: Default TDP detection for Nehalem.
- Add: On the fly CPU speed detection.
- Add: Close to system tray option.

- Change: Log file is now produced in CSV format - easily import your logs into Excel.
- Change: Logging interval is now in Seconds instead of miliseconds.
- Change: Default logging interval is now 10 seconds.
- Change: Logging is now off by default.


Older versions
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Comments

  • edited Oct 2006
    Welcome to Short Media, The Coolest. :thumbsup: Thank you for the wonderful monitoring program man. :rockon:
  • ThraxThrax Professional Shill, Pokémaster, Watch Slut Austin, TX Icrontian
    edited Oct 2006
    Hey, welcome TC. I've had to track your threads down at XS to get a copy of your program every time I needed it. Thanks for joining. :)
  • lewicronlewicron Glasgow
    edited Oct 2006
    Yep, love the program - I'd been using speefan to monitor temps up until i downloaded coretemp: found that speedfan had been reporting the temps wrong by ~10*C!
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Oct 2006
    Just curious, but is it normal to have the Core Temp reading be 10C lower than the MBM5 CPU reading? :)

    I have an Athlon64 3500+.
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Oct 2006
    That's a good question.
    To be honest I don't have a definitive answer. What does MBM5 report and what does Core Temp report? Is this delta at idle or under full load?
    What kind of cooling are you using and what are your ambient temps?

    BTW guys, I wrote an article about why I believe the DTS is a much better measure of temperatures in general (not in each and every case). It should be posted on www.overclockers.com tomorrow or on friday, at least I hope. So stay tuned...
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Oct 2006
    ...What does MBM5 report and what does Core Temp report? Is this delta at idle or under full load?
    What kind of cooling are you using and what are your ambient temps?...
    MBM5 = 48C
    Core Temp = 38C

    MBM5 Case Temp = 18C

    All under full load with 24/7 FAH.

    The room is 77.9F right now, though the computer is little affected by variations in room temperature. I have a bunch of computers going with an exhaust fan blowing air out into the hall. My room thermometer is closer to the ceiling than the floor, where this computer is situated. I have an AeroCool HT101 with two 80mm fans on the CPU.
  • csimoncsimon Acadiana Icrontian
    edited Oct 2006
    Thanks for joining TC. Wonderful monitor you have there ...I use it always!
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Oct 2006
    I guess that this could be one of those cases where the DTS could be inaccurate. I highly doubt that at full load there is only a 13C difference.
    Is it OCed or stock cooling?
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Oct 2006
    ...Is it OCed or stock cooling?
    No OC; non-OEM CPU cooler.

    It's a Newcastle core, if that has any bearing on the matter. :)
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Oct 2006
    I would recommend that you try to run it idle and see what happens to the temps. I'm pretty sure that in this case, Core Temp is way off.
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Oct 2006
  • csimoncsimon Acadiana Icrontian
    edited Oct 2006
    MBM5 Case Temp = 18C
    No way this is accurate prof. I put my money on core temp!
  • ThraxThrax Professional Shill, Pokémaster, Watch Slut Austin, TX Icrontian
    edited Oct 2006
    I too put my money on MBM5 being wrong.
  • TheSmJTheSmJ Farmington Hills (Metro Detroit)
    edited Oct 2006
    If this Core Temp app uses the temp diode on the core(s), where did MBM5 get its temp reading from?

    Furthermore, can this app be placed in the system tray like MBM5?

    Can (or will) it be capable of reporting GPU temps as well?

    I'd try this myself but my only A64 machine will be down for another week at least.
  • ThraxThrax Professional Shill, Pokémaster, Watch Slut Austin, TX Icrontian
    edited Oct 2006
    Most CPUs have an off-die diode as well, which is regarded as inaccurate.
    Yes it minimizes to tray.
    IT cannot currently do that.
  • TheSmJTheSmJ Farmington Hills (Metro Detroit)
    edited Oct 2006
    Thrax wrote:
    Most CPUs have an off-die diode as well, which is regarded as inaccurate.

    Really? So why would CPU manufactures spend the money on two temp diodes - one more correct than the other? :hrm:

    I also recall the Socket-A Bartons had on-die temp diodes as well, but only the newer mobos were cabaple of reading them. I believe the ABIT NF7 series boards were able to read them with a BIOS update.
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Oct 2006
    csimon wrote:
    MBM5 Case Temp = 18C
    No way this is accurate prof. I put my money on core temp!
    I feel like an idiot. :buck:

    In my old case (replaced a week ago after approximately eight years of use) I never paid much attention to the case temp. I just went into the MBM5 config file and re-jiggered a few things and now it reads 31C.

    This old dog isn't learning that new (metric) trick too well, is he? ;D
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Oct 2006
    Hey guys, I think that this article will clear some thing up:
    http://www.overclockers.com/articles1378
  • edited Oct 2006
    Great writeup, TC. :thumbsup:

    I have a question for you. Why is it that the TCaseMax has no reading on my Opty 170? It is a Rev E processor. I'm not worried, just curious. I definitely have temps under control on that rig, with folding temps only showing 37-40 C (2 clients running) on either core with Core Temp. That SI-120 and Delta GFB fan really keep things cool. :D

    As an aside, I see that Epox's monitoring circuitry on this old mobo is pretty darn close too. MBM shows very near the same temps as Core Temp on this board.
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Oct 2006
    Thanks for the article, TC - well worth the read. :cheers:
    muddocktor wrote:
    ...Why is it that the TCaseMax has no reading on my Opty 170...
    None for me and my Newcastle, either. Just curious. :)
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Oct 2006
    Thanks :D

    Regarding the TCM/TDP, in more updated AMD whitepapers they state that 49C/35W profile should not be used. I'm not too sure, I've noticed a lot of opties with 49C, and I'm pretty sure they're not a DC with a TDP of 35Ws ;)
    What I'm guessing is the 49C TCM reading is just used in cases where its over than max TCM that profiles define.
    So I finally decided to go along with their whitepapers and remove TCM/TDP for 49C/35W.

    About the Newcastle, these did not support this kind of feature. I will be adding all the general data about all the popular chips and be adding Max TCM/TDP values that AMD has posted.
  • edited Oct 2006
    HEY I have a K8 Triton gigabyte motherboard. theres not much difference on mine as far as temps OCed or not,i use Easy tube 5 for my temps as well as this program.I did a cpumark2.1 test and the temps were close.the voltage is at a default level, my cpu cooler comes with the cpu out of the box. Default speed shows just 2 or 3 degrees lower.
    cool temp:36c
    TDP:32.4 watts
    TcaseMax:53c
    EasyTune5:29c
  • ThraxThrax Professional Shill, Pokémaster, Watch Slut Austin, TX Icrontian
    edited Oct 2006
    profdlp wrote:
    I feel like an idiot. :buck:

    This old dog isn't learning that new (metric) trick too well, is he? ;D

    Would that be a "Metrick?"
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Oct 2006
    Thrax wrote:
    Would that be a "Metrick?"
    Almost certainly. :Pwned:
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Oct 2006
    I updated the first post with the article link and a "Digg it" link so to increase Core Temp popularity. so please click on it and digg it:
    http://digg.com/hardware/Dual_Core_CPU_Temps_a_program_to_monitor_EACH_core
  • edited Oct 2006
    OK, even though I don't really understand the concept of Digg, I went and registered and left a "Digg" and a comment for you. I hope I did this right.:buck:
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Oct 2006
    As I understand it, the more "Diggs" it has the more popular it will be and will stay on the first page for a longer time. Or something along those lines.
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Nov 2006
    Version 0.94 - 16th November, 2006
    - Fix: Temperature log file not created in EXE folder.
    - Fix: Temperature log file left "Processor" field blank.

    - Add: An actual icon for the EXE/System tray.
    - Add: An option to display temperature in Fahrenheit.
    - Add: An option to start Core Temp minimized.

    - Change: Only list physical processors in CPU selection.
    - Change: Improve Intel CPU detection.

    - Remove: GCPUID button.

    Older versions
  • csimoncsimon Acadiana Icrontian
    edited Nov 2006
    Version 0.94 - 16th November, 2006
    - Fix: Temperature log file not created in EXE folder.
    - Fix: Temperature log file left "Processor" field blank.

    - Add: An actual icon for the EXE/System tray.
    - Add: An option to display temperature in Fahrenheit.
    - Add: An option to start Core Temp minimized.

    - Change: Only list physical processors in CPU selection.
    - Change: Improve Intel CPU detection.

    - Remove: GCPUID button.

    Older versions

    Thanks Coolest ...the link doesn't work for .94 think you could correct that?
    Again thanks!
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Nov 2006
  • csimoncsimon Acadiana Icrontian
    edited Nov 2006
    Thanks that worked. Sorry I totally forgot that the link is in the first post. I got it and it works great!!!
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Mar 2007
    Version 0.95 - 17th March, 2007

    - Fix: Revision F Turion/Turion X2 detected wrong.
    - Fix: Core Temp fully loads one core on a dual core AMD CPU.
    - Fix: Core Temp crashes on Dual Core Opteron 200 series systems.
    - Fix: Core Temp misdetected certain Dual Core Opteron CPUs.
    - Fix: Must set Core Temp to run as Administrator in Vista.
    - Fix: Can't see Core Temp GUI if Core Temp was last closed minimized.
    - Fix: C2D L2 rev. report very low temperatures. (Tjmax to 100C)
    - Fix: Core Temp reported wrong temps after a while. (Driver conflict)
    - Fix: Core Temp reported Max VID on Intel CPUs. (Now shows current)

    - Add: Show temperature in System tray.
    - Add: Manual refresh option by pressing F5 or "File" Menu.
    - Add: Show "Delta to Tjunction" temperature for Core 2 CPUs.
    - Add: Support for latest Intel and AMD CPUs.
    - Add: Minimize/Restore option in system tray icon right click.
    - Add: Save last window position.
    - Add: Prevent 2 instances of Core Temp from launching.

    - Change: Rewritten Intel CPU recognition code.
    - Change: Core 2 Duo codename change to Conroe-2M from Allendale.
    - Change: Pop up bubble-window with temperatures removed.
    - Change: Not Beta status anymore.

    *PS: Why can't I edit the first post?
  • profdlpprofdlp The Holy City Of Westlake, Ohio
    edited Mar 2007
    ...Why can't I edit the first post?
    We've had spammers sneak back and throw a link to their crap into a post after they think no one will notice. Because of this we've been forced to limit the time period for editing a post.

    I updated your top post with the new information. :cheers:
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Mar 2007
    Thanks :thumbup
  • ronboronbo Connecticut
    edited Mar 2007
    Why is the new version of Core Temp not showing me the TDP and TCaseMax readings? The old version .94 beta is showing me these readings?

    ps..I forgot to add also that when I ran it it said something about driver not found and then went into an endless loop and I had to reboot to close it. I will try to redownload it again...
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Mar 2007
    ronbo wrote:
    Why is the new version of Core Temp not showing me the TDP and TCaseMax readings? The old version .94 beta is showing me these readings?

    What CPU?
  • ronboronbo Connecticut
    edited Mar 2007
    Sorry, I forgot to say..AMD Athlon 64 FX-55 (San Diego).
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Mar 2007
    Can you please post a screenshot of Core Temp and A64TCaseMax screenshot side by side for my comparison? Also a Register Dump (from CPUz) would be usefull as well.
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Mar 2007
    If anyone is having problems with Core Temp crashing on them, please look at the appropriate thread and post there your problem and system spec. I think this way it will be very effective at getting to the bugs faster.

    Intel Thread
    AMD Thread
  • ronboronbo Connecticut
    edited Mar 2007
    Can you please post a screenshot of Core Temp and A64TCaseMax screenshot side by side for my comparison? Also a Register Dump (from CPUz) would be usefull as well.

    It took me a while to figure out how to post a screenshot but here they are. coretemp95cd4.th.jpg"]This [/URL]is core temp .94beta and coretemp94betahn6.th.jpg"]this [/URL]is core temp .95
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Aug 2007
    Version 0.95.4 - 22nd August, 2007
    - Fix: Core Temp causes restarts/BSODs on start.
    - Fix: Core Temp causes hard shutdowns on some AMD systems.

    - Fix: System tray icons are black squares on less than 32bit desktops.
    - Fix: Some other minor bugs fixed.

    - Add: Support new Intel CPUs.
  • ThraxThrax Professional Shill, Pokémaster, Watch Slut Austin, TX Icrontian
    edited Aug 2007
    You're the best. :)
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Nov 2007
    Could someone please please edit the first post and fix the links? As I can't edit the post.
    www.thecoolest.zerobrains.com should be changed to www.alcpu.com
    The old URL is gone now.
  • edited Dec 2007
    OK, I believe I have all the links updated for you, T_C. Let me know if you find a wrong link on any of your links in the original post. :)
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Dec 2007
    Version 0.96 - 31st December, 2007

    - Add: System tray icons configuration.
    - Add: Support for Intel's latest CPUs.
    - Add: ClearType font support.
    - Add: Time\Date column to the log file.
    - Add: Always on top option.

    - Fix: Core Temp does not proprerly display temperature and CPU select fields.
    - Fix: Log file layout.
    - Fix: Hide\Show does not properly Minimize\Restore window.
    - Fix: Core code names aren't properly detected. (Intel)
    - Fix: Incorrect\Missing CPU rating when not using stock\maximum multiplier. (Intel)
    - Fix: Wrong CPU clock is reported when using EIST\non-maximum multiplier. (Intel)
    - Fix: Wrong detection of Merom based CPUs.
    - Fix: Single core Athlon 64s and Semprons reading -49C constantly. (Rare)
    - Fix: C2D M0 rev. report very low temperatures. (Tjmax to 100C)
    - Fix: Layout and display of tool tip text in the system tray. (Now shows a core per line)

    - Change: Log the start and end of a session even if logging is disabled.
    - Change: Settings and Systray settings windows appear in center of main window.
    - Change: Rename "Tjunction" field to "Tj. Max" to make things clearer.

    Happy new year to everyone :)

    muddocktor: Thanks :)
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Jan 2008
    Version 0.96.1 - 15th January, 2008

    - Add: Support for *Phenom and "Barcelona" Opteron.
    - Add: Support all K8 processors.
    - Add: Support Intel Celeron M 500 series.

    - Fix: Wrong CPU speed on Intel ES chips.
    - Fix: Fix M0 Tjunction max detection.
    - Fix: Intel QX6850 CPU's rating shown as QX6650.
    - Fix: Intel E6550 CPU's rating shown as E6650.
    - Fix: Intel Celeron M 400 series detected incorrectly.
    - Fix: AMD Opteron for Socket AM2 reported as Santa Rosa instead of Santa Ana.

    *Please read this.
  • ThraxThrax Professional Shill, Pokémaster, Watch Slut Austin, TX Icrontian
    edited Jan 2008
    The Coolest is the best! :D
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Mar 2008
    Version 0.97 - 5th March, 2008

    - Add: Vista x64 support - All drivers are now digitally signed!
    - Add: Logitech G15 keyboard support - see ReadMe!.txt for details.
    - Add: Support 45nm LGA775 Xeon series.

    - Fix: Opaque background in system tray wasn't 16x16 pixels.
    - Fix: Yonah based CPUs incorrectly detected.
    - Fix: 1333FSB Dual Core Conroe based Xeon incorrectly detected.
    - Fix: Dreaded cycle of "Driver can't load" messages if driver failed to load.
    - Fix: Socket AM2 Athlon-FX was not recognized.

    - Change: Core Temp layout on a Phenom.
  • The-CoolestThe-Coolest Tel Aviv, Israel
    edited Mar 2008
    Version 0.97.1 - 7th March, 2008

    - Fix: Phenom did not display proper temperature.
    - Fix: Phenom randomly reports 255C (value ignored).
    - Fix: Phenom displays more than a single system tray icon per CPU.
    - Fix: Phenom 1/4 multipliers rounded improperly.

    - Change: C° and F° now will display °C and °F accordingly.
  • edited Mar 2008
    Thanks for all the hard work on this great program and also for keeping us informed when you update it, T_C. :thumbsup:
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