How well does the 7700HQ undervolt?

Discussion in 'Hardware Components and Aftermarket Upgrades' started by Ickarius, Jan 22, 2017.

  1. Blatcher2

    Blatcher2 Newbie

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    I would step a bit for 24/7 undervolt if just 5mv more crashes your system. What program are you testing with because that V-core and those temps are very low.
     
  2. Althernai

    Althernai Notebook Virtuoso

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    That's a really nice undervolt if it works for you, but you have to be a bit careful: as far as I can tell, there is no reliable way to determine that an undervolt is stable except for simply using the laptop. My XPS 15 is currently at -100mV CPU and -75mV iGPU. I used it at -110mV for some time and while this is rock solid in benchmarks and doesn't cause any problems when coming back from sleep, it turns out to very rarely cause crashes in games (about 1 crash every 5 hours vs. 0 crashes in 30+ hours at -100mV).
     
  3. Falkentyne

    Falkentyne Notebook Prophet

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    If you undervolt enough to avoid TDP limit errors in Prime95, showing up in Throttlestop (=45W), then small FFT test will work in prime95 to test the undervolt. But even with a small undervolt, you will exceed TDP....
     
  4. Sebixy

    Sebixy Newbie

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    I used TS and started the long test a few times in immediate succession to test temperatures and did some 4k gaming to test stability. I also undervolted gpu 100mV probably that helps with temperatures too. Since I don't use my pc to the ful potential often I think stability will be ok in case I experience crashes I will reduce undervolt. I also noticed that the clock dosen't goes above 3400GH even if it is set to 3800, probably that helps with stability and temps.
     
  5. Emanuell Hitardo

    Emanuell Hitardo Newbie

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    My Asus GL502VMK (K for Kaby-Lake), with an Intel i7-7700HQ, undervolts -110mV.
    The core voltage - which is the main focus - is around 1V, staying between 0.942V and 1.043V.

    This laptop suffers from Power throttling, which basically is the CPU demanding more power than it is defined as the limit power (in Watts). So, the CPU will throttle to 0.8GHz, raising slowing to the normal frequency by steps: 0.8; 1.2; 1.8; 2.7; 3.8GHz.
    The undervolt solution solve this issue.

    I tested using Intel XTU (Extreme Tuning Utility) and maintained that Voltage with Throttle Stop running at Windows logon.

    Despite all my efforts, I noticed I am not able to reach the full 3,80GHz, staying shy of 3,73GHz.
    This is due to reference clock not staying at 100%, being lowered to ~99,7%.
    I am not sure what is causing this, but I will keep digging...

    I also undervolted my GPU, using MSI Afterburner.
    For more details, check the ROG forum here.
     
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  6. Sebixy

    Sebixy Newbie

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    While I didn't have the power trottling issues my i7 7700hq does not reach ful clock either. I get aproximatly 3.6 ghz single core and exactly 3.4 ghz whith all cores. Its wery annoing because temps are never realy hight so I would like some more performance. Does sombody knows a fix to this? I alredy tried with trottlestop but klock speed is apparently locked. I have a dell xps15 9960
     
  7. Papusan

    Papusan JOKEBOOKS = That sucks! Dont wast your $$ on FILTH

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    Probably tasks in the background who load more than one core. Disable unnecessary processes - software and test again. Use Autoruns.Exe
     
  8. Falkentyne

    Falkentyne Notebook Prophet

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    The fix is to buy an unlocked processor. Locked processors are bad. There were a few locked processors which allowed you to increase the turbo bins a few steps, like x3 higher, after a few tweaks (e.g. 4700HQ), but there's no fix for any newer processors. The only processors worth buying are the HK processors, or desktop processors (in barebone laptops). It's also very difficult or impossible to force only one thread usage because windows will still use other threads by itself. See if your Bios allows you to disable 3 cores or if there is an unlocked Bios available to let you set the # of active cores (don't be surprised on HQ processors if the most you can do is disable hyperthreading on an unlocked Bios).

    There may be INI tweaks you can do to windows to only force it to run with 1 core or 2 cores. There were for windows XP. No idea if there are any for windows 10 or 7.
     
  9. 94sportsedan

    94sportsedan Notebook Guru

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    On my AW 15 R3 I undervolt my 7700HQ to -140mv and stable for gaming.
     
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  10. Rannon Anthony

    Rannon Anthony Newbie

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    hello everyone, I own a Asus GL502VMK. which i have repasted with Thermal Grizzly Conductonaut, along with a few more things like new high quality thermal pads, tapped the gap between the heatsink and fan AND doubled the height of the fan intake spacers so the when the case cover is put back, the fans have more area to pull air from. i have been using Intel xtu to undervolt as i just found it easier and i settled with a core&cache undervolt of -0.108mV. for the past 8 months i have been running this setup. but i read somewhere on the net that because the core and cache slider is sync'd and cannot move independently of each other. people have got consistantly better undervolts with throttlestop. ( although the ui is not so straightforward ). so after trying it out it turns out to be true, in intel xtu , i could not manage more than the -0.108mV on the core or cache. but in throttle stop, i managed to undervolt the cache to -0.125mV and the core to -0.150mV.

    AND ITS COMPLETELY STABLE.

    i used occt/aida 64/ prime 95

    and irl games like bf1/4 , gta 5 online ( and offline ) , and lighter games like cs go as well

    the computer is completely stable and has not locked up or crashed for the last 2 months.

    what i don't understand is why when i asked intel xtu to do a -0.110mV on either the cache or core, it outright ust failed and locked the system. so that's worth noting

    room temp 35c humidity give/take 80%

    without either undervolt, in aida 64, the cpu would consume 44w and maintained 85c@3.4ghz (3.8Ghz@1.21v) 0.00mV

    with the undervolt from intel xtu, in aida 64, the cpu consumed 36w and maintained 75c@3.4ghz (3.8ghz@1.14v) -0.108mV (both cpu/cache)

    with the latest undervolt using throttlestop, in aida 64, the cpu consumed 32w and maintained 70c@3.4Ghz (3.8Ghz@1.042v) -0.125mV for cache and -0.150mV for core

    thats just my research into cpu testing and stability.

    alongside that, i have the GTX1060 6GB running at 1810mhz@0.800mV.

    temps in gta 5 online after about 6 hours ( remember laptop is on default feet, not raised in anyway)

    cpu peak of 90c but averages 86c

    gpu peak of 87c but averages 85c

    if the laptop is lifted or placed on a cooling pad, take away 5-6c from the avg and max temps.

    have any more questions? feel free to ask.

    cheers everyone!

    PS: sorry if my english is a bit weird, i did type this in a hurry :p.

    take care!
     
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