i7-3630qm throttles to 1200 Mhz at less then 70°C if Turbo Boost is enabled

Discussion in 'PC Hardware' started by chriz74, Oct 20, 2016.

  1. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    I have an Asus laptop with hm76 Ivy Bridge chipset with Intel i7-3630qm, the CPU is 2.4Ghz and can Boost up to 3.4Ghz.
    What happens is the CPU throttles to x12 (1.2Ghz) when Turbo Boost is enabled, this at less than 70°C, the TCC activation temperature should be 95°C!
    The bios has the latest microcode patch v. 1C from Intel and before had the v. 15.
    I made a test with cinebench and monitored the behavior of the cpu with Intel Power Gadget, ThrottleStop and SpeedFan, I made a video.
    As you can see what happens is if I disable Turbo Boost with ThrottleStop the multiplier goes straight to x24 and the temperature goes up yet no PROCHOT signal is sent.
    If I disable BD BROCHOT the temperature goes up but never arrives to 95° .. it arrives to 80° / 81° C.
    So what is going on with this CPU??

    I can't post links, look for my channel on youtybe -> chriz74
     
  2. MS_User

    MS_User MDL Guru

    Nov 30, 2014
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    dude dont disable turbo boost....maybe when u change the frequency the cpu runs hot to compensate for the rest of the hardware like video i assume this is a gaming laptop?
     
  3. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    Hello, I don't want to disable turbo boost, what I am trying to say is that the cpu is sending a prochot signal at 70°C instead of 95°. You can see in the two other videos that I made with geekbench, one with prochot enabled and the other with prochost disabled. In the disabled one the cpu can go up to 3.4ghz and 91°C without any hassle. The geekbench score is higher than with the prochot enabled and the bench takes 1 minute less to run.

    edit:

    this is not a gaming laptop.
     
  4. bpwnes

    bpwnes MDL Member

    Aug 11, 2015
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    Is that the original CPU for the laptop?
     
  5. Joe C

    Joe C MDL Guru

    Jan 12, 2012
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    #5 Joe C, Oct 20, 2016
    Last edited: Oct 20, 2016
    I'd guess that your fan/heatsink is plugged up with lint fuzzies and such trash, which means that you cpu will throttle down to keep itself from burning up. Cleaning out the fan/heatsink on your laptop would be the first thing I would do.
     
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  6. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    Sorry to disappoint you but I checked that yesterday and it was clean, I cleaned it completely and reapplied paste to no avail.
     
  7. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    not it's not.
     
  8. Joe C

    Joe C MDL Guru

    Jan 12, 2012
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    What were the thermal specs from the original cpu that came with this laptop?
     
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  9. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    #9 chriz74, Oct 20, 2016
    Last edited: Oct 20, 2016
    (OP)
    it was an i3 2370m, it was a Sandy Bridge CPU on Ivy Bridge Chipset.
    And please keep in mind that the Bios is letting the ME firmware read and report temperatures. Also if I disable automatic thermal configuration I can see the BIOS reads the data from the silicon and sets the throttling temperature to 95°C so I don't think this is related to what CPU was there before. Asus doesn't have access to ME firmware settings AFAIK, the CPU dictates.

    Maximum operating temperature 85°C
    Thermal Design Power 35 Watt

    I now ordered an i5-3210M that also runs at 35Watt just to check what happens.
     
  10. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    No Mobo chipset is Intel® BD82HM76 PCH
     
  11. Joe C

    Joe C MDL Guru

    Jan 12, 2012
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    What's the entire model number of your laptop?
    yup... that i7 chip runs hotter,
    Maximum operating temperature 105°C
    Thermal Design Power 45 Watt

    The TDP is 10 watts higher and runs 20 degrees hotter than that i3 chip, Can't say how well you bios supports that i7 chip
     
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  12. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    F301A-RX035V, it has hm76. I am 100% sure.
     
  13. Michaela Joy

    Michaela Joy MDL Crazy Lady

    Jul 26, 2012
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    I'm thinking that you may need to mod the BIOS to get this CPU working. Also, the heatsink may be underrated, which means that the thermocouples are not designed
    for it, and their values may be erroneous for the current (old CPU) temperature calibration.

    In it's simplest form, a temperature overload sensor is nothing more than a thermocouple producing a voltage, and after being amplitude scaled, fed into an analog comparator
    to be compared to a voltage reference. The comparator trips when the thermocouple voltage is above that reference.

    Sorry about the long-winded answer... :icecream:
     
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  14. MS_User

    MS_User MDL Guru

    Nov 30, 2014
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    my opinion i would have never invested on a high end cpu for a older mobo...u start running into problems.
     
  15. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    well that's not a great deal. I can sell it back. I will try the i5-3210M to see what happens before.
     
  16. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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  17. chriz74

    chriz74 MDL Novice

    Nov 1, 2009
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    ? Where do you get the idea that the bios doesn't support Turbo Boost? The bios recognizes the CPU correctly and TB is working.
     
  18. MS_User

    MS_User MDL Guru

    Nov 30, 2014
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    u install a top of the line cpu in a mobo two generation old and i think even a I5 mite give u problems. your mobo is design for I3 only.
     
  19. Michaela Joy

    Michaela Joy MDL Crazy Lady

    Jul 26, 2012
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    You could post your question in our BIOS mods section, just to see if anybody has done the same thing before.
    Hopefully, they could help you and maybe share a modded BIOS designed to run that CPU.
    Apart from that, you'll have to disassemble the BIOS and see where the x86 code is that initializes that particular piece of hardware. Good luck with that. Without intimate knowledge of the MoBo hardware design, trying to change the BIOS can be tricky. :eek:

    A schematic of the MoBo will tell you that. Without it, I don't see how you'd be able to go any further.

    As was previously said, I recommend putting the original CPU back and make sure that everything is functioning normally.
    Then, find out if this MoBo supports that CPU, and what changes if any need to be made to make it work.

    IMHO, your question belongs in the BIOS section.

    Good luck.
     
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