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    [Guide] How to take full control of the i7-8750H (Advanced version)

    Discussion in 'MSI' started by hackness, Sep 19, 2018.

  1. xLima

    xLima Notebook Evangelist

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    I did not try without doing the CMOS battery unplug.

    Sent from my BLA-L09 using Tapatalk
     
  2. Pepillo

    Pepillo Notebook Guru

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    Without clearing CMOS and Bios, not work. I will try another day unplugging battery and CMOS, I have problems with one antenna connector, it is a pain to fix it on the wifi card :mad:
     
  3. 1610ftw

    1610ftw Notebook Evangelist

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    I finally got my hands on a GT75 with the 8750H, what would be a normal stable overclock for such a system when it often will run on 6 cores? Stability is key for me so I only ever overclocked the 6820HK in my GT72 to 3.8 GHz with a -100mV undervolt and I have been very happy with that. ,

    Is it necessary to do anything in the bios of the GT75 except to unlock it when the goal is a more moderate overclock?
     
  4. Papusan

    Papusan Jokebook's Sucks! Dont waste your $$$ on Filthy

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    Can’t overclock 8750H
     
  5. 1610ftw

    1610ftw Notebook Evangelist

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    Arrrrrhhhh! I feel slightly stupid now...
    I have to admit that it did not even occur to me that MSI would sell their top of the line gaming notebook without any overclocking ability. I guess I cannot complain as I got it at a pretty good price and my Clevo P870DM-G cannot easily be upgraded to a 6-core processor like I wanted. Still it is really silly for their top of the line gaming laptop and given the fact that one cannot upgrade the CPU to one that can be overclocked.
     
  6. L33i

    L33i Notebook Enthusiast

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    I'm assuming a lot of this stuff is fully applicable to the 9 series 8 core versions too?
     
  7. Pepillo

    Pepillo Notebook Guru

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    It's not MSI's thing, it's Intel that decides that processors like the 8750H can not overclock.
     
  8. 1610ftw

    1610ftw Notebook Evangelist

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    It's MSI's decision to use those processors in the first place.
     
  9. 4W4K3

    4W4K3 Notebook Evangelist

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    You picked up a GT75 with i7-8750H at a good price. There are options with i9 fully unlocked processors, at a substantially higher price tag. You can't blame MSi here, the processors are clearly advertised per model. A good rule of thumb is if you're paying last year's price you're probably getting last year's model.
     
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  10. 1610ftw

    1610ftw Notebook Evangelist

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    I am not blaming anybody I just pointed out that MSI COULD choose to offer another processor for that model if they wanted to, not that they had to.

    And as I really got a good price I certainly won't complain or feel cheated out of anything, still very happy with my purchase that has 6 cores and each one is faster than the 4 cores of my overclocked GT72 :)
     
  11. hackness

    hackness Notebook Virtuoso

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    The techniques in this thread? Yes.
     
  12. L33i

    L33i Notebook Enthusiast

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    Can you please perform a core parking percentage calculation for 8 core CPUs? One found in chapter 6.
     
  13. hackness

    hackness Notebook Virtuoso

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    Should be around the following %

    1. 1 core = 13%
    2. 2 cores = 25%
    3. 3 cores = 38%
    4. 4 cores = 50%
    5. 5 cores = 63%
    6. 6 cores = 75%
    7. 7 cores = 88%
    8. 8 cores = 100%
     
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  14. hackness

    hackness Notebook Virtuoso

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    Chapter 3 and 6 updated.

    Added % for the number of cores allowed to park / maximum unparked cores.
     
  15. 1610ftw

    1610ftw Notebook Evangelist

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    Great work Hackness, have you made any tests as to how much you are able to extend useful battery life with this?
    I guess not that much when you also have a power hungry graphics card but I would imagine that it could make a big difference in laptops with a GPU switch.
     
  16. L33i

    L33i Notebook Enthusiast

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    I can confirm that on the GE75 9SF with the 8 core, Set CPU Flex Ratio Override to Enabled Set CPU Flex Ratio Settings to 8 cannot be done. You can set the override to enabled but the ratio cannot be changed. No matter what you do it will always stay at 23. This is with the latest BIOS.
     
  17. hackness

    hackness Notebook Virtuoso

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    Really? That's a pity, locking this really doesn't have any advantages though, that seems weird MSI would care about this and lock it.
     
  18. hackness

    hackness Notebook Virtuoso

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    Test not done, only just to enable core parking / Take control of the maximum unparked core number.

    But when you test by benching the cpu under battery mode, take control of the maximum allowed unparked core does make a difference to the TDP.
     
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  19. 1610ftw

    1610ftw Notebook Evangelist

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    Thanks, that is what I thought and I will give that a try after following your guide. The biggest issue with battery life and the GT75 is the lack of a mux switch - I had one of the first GT75 for a brief time and it still had a mux switch but apparently MSI has taken that capability away with later GT75 models which puzzles me. I'd like to know the reason why as it is not like they now have Optimus instead, but no option whatsoever to extend battery life.
     
  20. L33i

    L33i Notebook Enthusiast

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    Yeah, you can toggle it to enabled but when you try to change the ratio number from anything else than 23, it simply ignores your input. I even tried the +- signs to alter the value, simply refuses. It does take your input, say I hit 8 and the text field will show 8 but when I exit out of the field or hit enter, it reverts back to 23.
     
  21. xLima

    xLima Notebook Evangelist

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    Can someone confirm 9th series BIOS UNLOCK code has been changed/disabled in New MSI 9th series CPU?

    Sent from my BLA-L09 using Tapatalk
     
  22. L33i

    L33i Notebook Enthusiast

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    GE75 9SF - BIOS unlock code works.
     
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  23. TWERKMACHINE

    TWERKMACHINE Newbie

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    Hi i have a GT 63 8RF
    i followed the guide until the ram thing

    Should i have enable in throttlestop "clock modulation" & "Set Multiplier" Enable ?

    And when it comes to the step " Chapter 2: Test if CMOS clear resets the RAM timings" when i follow these steps my bios just come back to default every time
     
  24. hackness

    hackness Notebook Virtuoso

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    Depends on your needs, however we usually just limit it in the FIVR menu and left the 2 options you have mentioned unticked.

    That means you are able to reset the RAM timings with the current way, it is just that rather than just the RAM timings, even the BIOS settings are back to default, that's even better.
     
  25. sasistegi

    sasistegi Newbie

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    Thank you for the tips and this guide hackness. With your guide I have a really good improvement on my battery life on my GS63 8RE (4.7 / 5h instead of 3.5h).
    I have a little doubt. Is there a way to show to the OS (Windows 10 1903 in my case) the actual clock of the processor? Some programs drop constant warning caused by the "low" clock of the processor, which taskmanager report at 0.8 GHz, instead of the real 3.8GHz on AC. All the percentage of CPU usage reported by task manager (general use and process use) are completely messed up. I would like to see the working again. Is anything that I can do? Thank you in advance
     
  26. hackness

    hackness Notebook Virtuoso

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    Yes indeed, task manager seems to sample in a weird way and report the wrong frequency even without the mod. As far as I know there isn't a fix to it as that's what it is doing by itself, program like ThrottleStop / HWINFO64 reports the correct frequency and usage.
     
  27. Michael R Head

    Michael R Head Newbie

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    Did you ever figure this out? i could really use some help in getting my gs75 to recognize it.
     
  28. Pepillo

    Pepillo Notebook Guru

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    No, I didn't get it, or with the latest bios update, or resetting this or the firmware, I couldn't make it work. :(
     
  29. Michael R Head

    Michael R Head Newbie

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    the weird thing is the Bluetooth works but I have no Wi-Fi and it's not picking up in the device manager isn't Bluetooth and Wi-Fi all within the same card?
     
  30. Pepillo

    Pepillo Notebook Guru

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    Yes, it's the same card. I don't understand why it doesn't work either.
     
  31. Jageruao3

    Jageruao3 Notebook Enthusiast

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    Hi, i am new here, and i need some help or advice, i try to read some about throttlestop and undervolting. But i am new it this. Please help, i have MSI GT73VR i7 7820, with 1070, and not really long time ago its seems like Dragon Center dont do hes job any more. When you shifting power options its dont look like something realy change, just temperature seems like, but not performance... Can some body help with that? Sorry i'm not in the right topic

    Sent from my SM-G965U using Tapatalk
     
  32. 777baja777

    777baja777 Newbie

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    Hi guys, thanks everyone for very useful information. I managed to stop my CPU from throttling with the IMON parameters and also overclocked my RAM to 3460MHz. However it would be great if someone can give me tips on how to unlock multiplier control in TS as it is possible to change it but it doesn't change anything. Clock stays the same at 3.9GHz. another thing is how to change fan curve from the BIOS. I found fan section there and played with it but it doesn't seem to have any effect after all.
     
  33. Papusan

    Papusan Jokebook's Sucks! Dont waste your $$$ on Filthy

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    You can’t unlock 8700Hq. Forget it.
     
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  34. 777baja777

    777baja777 Newbie

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    8700HQ? You mean 8750H. I want to go down with multiplier not up. I can get 2200MHz by disabling turbo but I want something between 3.9GHz and 2.2GHz.
     
  35. Porter

    Porter Notebook Virtuoso

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    I think its on the FIVR tab, left side, the maxes for 1-6 cores in use. TS does not need to be "ON" but you do need to have the profile you're messing with selected.

    Ignore the multiplier on the main front tab in TS.
     
    Last edited: Jul 31, 2019
  36. 777baja777

    777baja777 Newbie

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    Yes it is there but it doesn't do anything for me. You can set anything you like and it will still keep 3.9GHz. My laptop is MSI GP73 8RF
     
  37. Porter

    Porter Notebook Virtuoso

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    Can you take a screenshot of the FIVR window & have the main window beside it so you can see both in one shot? I'm at work so pictures are blocked but I can switch to my phone to view it.
     
    Last edited: Jul 31, 2019
  38. 777baja777

    777baja777 Newbie

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    I have sorted it out. It wasn't working before I overclocked memory so I think it was about unlocking the overclocking menu in the BIOS. Now it works just fine. Thanks for help anyway!
     
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  39. katates

    katates Notebook Guru

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    Hi, i have 2x8 Hyinx Ram and I did everything you said including the bios settings except i kept Memory Voltage 1.20 because it was 1.20 so i did not changed it. I did the same tests and no errors. Also i did AIDA64 Stress test, and nothing crashed. So did I overclocked my ram successfully?

    Screenshot_2.png
     
  40. 777baja777

    777baja777 Newbie

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    Yes you did look at your memory frequency 1729MHz multiply that by 2 and you get your memory clock.
     
  41. katates

    katates Notebook Guru

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    Yeah but somebody can not get 3467 with Hyinx and, OP has Samsung at 1.30V but i am at Hyinx with 1.20V and @3467mhz. So I am not sure if it worked out because it would be surprising for me.

    Also i was not able to set Cpu flex ratio to 8, no matter what i write it keeps going back to 22. When i try 4965 it says invalid. But 8 does not apply?
     
    Last edited: Aug 7, 2019
  42. 777baja777

    777baja777 Newbie

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    All the modules are different it doesn't mean that you can't because someone else couldn't. I have Samsungs on 1.20V at 3458MHz and it works stable. It clearly worked. Look at the transfer rates. If you don't believe go back to defaults, run the tests OC and run it again.
     
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  43. hackness

    hackness Notebook Virtuoso

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    Try running AIDA64's memory speed test at 8750H's max speed, you should see a much higher result.

    3467-1.20V-20-20-49-20-26-65535-694-9-18 AIDA64 2nd Run.PNG

    To increase the read speed, increase the tREFI.
    If you see BSOD or constant error, raise tRFC.
    If you see freezing, lower the tREFI.

    Stability Testing also requires about 2 full weeks of normal usage.
     
  44. katates

    katates Notebook Guru

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    Would it be a problem if i use your settings to start with since I have 16gigs and another brand? I tried some tests and i get BSOD constantly should i only go with increasing tRFC?
     
  45. hackness

    hackness Notebook Virtuoso

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    Start with increasing the tRFC by 10 and repeat that until no BSOD is happening, since you are able to boot, it means that both of your RAM could support that frequency.

    Also I've been running @1.20V for about 1 month and more, it's stable on mine.
     
  46. xLima

    xLima Notebook Evangelist

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    I can attest to this 1.20V I did the same and reduced uncore to +150 all my good. Ofc I only OCed successfully to 3000ish.

    I then tweaker voltages and found it was stable.

    Sent from my BLA-L09 using Tapatalk
     
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  47. katates

    katates Notebook Guru

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    I think i have weird problem memtest 4pass no errors, i can play games smoothly, but after games or stress tests when system becomes idle i get bsod or freezing. Could it be related to cpu undervolt?
     
  48. hackness

    hackness Notebook Virtuoso

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    It could be that the CPU UV settings worked fine for higher frequency but crashes at lower frequency.

    Back off a bit and see if it is still occurring.
     
  49. hehaw

    hehaw Newbie

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    I am very aware that the 8750h cant be overclocked, but can someone explain to me how jayz2cents managed it on his laptop, here is the video.

     
  50. Papusan

    Papusan Jokebook's Sucks! Dont waste your $$$ on Filthy

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    Did you see it run oc'd? :rolleyes:
     
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