Calling ALL G7 7588/5588 (8750H) owners! PLEASE LOOK

Discussion in 'Dell' started by mnewxcv, Sep 1, 2018.

  1. mnewxcv

    mnewxcv Notebook Enthusiast

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    ***also curious about other Dell models and CPUs

    Hi everyone, thanks for taking a minute to see what this is about. I recently purchased a G7 7588 as the specs are perfect for what I want at the price point. I noticed an issue however. Performance on battery is significantly worse than when plugged in. Yes, I know this is not necessarily a red flag, and that most machines are limited in some way on battery. After all, we can not expect a small battery to do what a 180w power brick can.

    However, I am noticing that max TDP for the CPU on battery is 15W. That seems awfully low for a 6 core processor. In fact, it power throttles to 800MHz under full load (cinebench). After googling, I am not the only one. However, I notice in the notebookcheck review of this laptop, they claim to achieve a score of ~1000 on battery. I am not seeing anything close to that.

    I would ask that anyone with a g5/g7 5588/7588 (any CPU) please chime in with the following:

    1. Laptop Model
    2. BIOS revision
    3. CPU installed
    4. Cinebench R15 score on AC Adapter
    5. Cinebench R15 score on battery
    6. Lowest speed shown in task manager when running Cinebench on AC
    7. Lowest speed shown in task manager when running Cinebench on Battery
    8. If you have any software that monitors TDP (hwinfo, hwmonitor, throttlestop, XTU), please share the max TDP displayed when running Cinebench on AC, and battery respectively.


    Please take the 5 minutes this test takes to submit your sample in this thread. There seems to be a potential issue with this laptop when running on battery and this process will help identify if that is the case. You can download the program here:

    http://http.maxon.net/pub/benchmarks/CINEBENCHR15.038.zip

    Here is my result (testing all BIOS revisions, more to come):


    1. G7 7588
    2. 1.1.0
    3. i7 8750h
    4. 1062
    5. 431
    6. 2.98GHz
    7. 0.79GHz
    8. n/a

    1. G7 7588
    2. 1.2.1
    3. i7 8750h
    4. 1089
    5. 440
    6. 2.96GHz
    7. 0.79GHz
    8. n/a

    1. G7 7588
    2. 1.3.0
    3. i7 8750h
    4. 1054
    5. 435
    6. 2.16GHz
    7. 0.79GHz
    8. n/a

    Voltran:
    1. G5
    2. 1.3.0
    3. i7 8750h
    4. 1084
    5. 384
    6. Settling at 3.19 GHz after short Turbo at 3.89 GHz
    7. 0.81 GHz half of the time and 2.1 GHz the other half. It seems to be random, not a throttle mechanism due to heat or power.
    8. AC: 78W during Turbo, 45W after settling down. Battery: didn't really bother to check, but under 20W.

    Nemix77:
    1. G3 3779
    2. 1.2.1
    3. i5-8300H
    4. 822 (battery mode best performance and system cooling policy active)
    5. 362 (battery mode better battery and system cooling policy passive)
    6. 3.89Ghz (minimum processor state 90% and maximum 100%)
    7. 1.49Ghz (minimum processor state 5% and maximum 90%)
    8. AC: 47W maximum and Battery: 14W maximum (HWMonitor and Undervolt -180mv)

    Bacaunawa:

    1. G7 7588
    2. 1.3.0
    3. I7 8750H
    4. 1064
    5.passive cooling policy: 279 (this was pretty steady for several tests before i changed cooling settings)
    active cooling policy: 529 (initial score. Stayed around 500 after reverting settings back to passive)
    6. 2.94GHz
    7. 0.79GHz
    8. AC: 77.74W
    Battery: 16.80W

    Tekigun:
    Run 1
    1. G7 7588
    2. 1.0.1
    3. i7 8750h
    4. 1209
    5. 487
    6. 3.91 GHz
    7. 1.50 GHz
    8. AC: 56.938W, Battery: 14.968W

    Run 2
    1. G7 7588
    2. 1.0.1
    3. i7 8750h
    4. 1175
    5. 486
    6. 2.70 GHz
    7. 1.49 GHz
    8. AC: 57.059W, Battery: 14.967W

    Run 3
    1. G7 7588
    2. 1.0.1
    3. i7 8750h
    4. 1150
    5. 487
    6. 3.15 GHz
    7. 1.50 GHz
    8. AC: 57.454W, Battery: 14.968W

    Chrisloko:
    1. G7
    2. 1.3.0
    3. i7 8750h
    4. 1190
    5. 301
    6. 3.5GHz
    7. 0.79 GHz
    8. AC: 78W Turbo, 45W after. Battery: 15.4W
     
    Last edited: Sep 12, 2018
    Chrisloko likes this.
  2. Mr.K-1994

    Mr.K-1994 Notebook Consultant

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    I am not an Dell G7 user(in fact I am an Acer Predator one),but Dell has been messing up so many things both in their Inspiron and Ailenware.
    Crappy thermal paste,CPU throttling issues and countless others.
     
  3. Voltran

    Voltran Notebook Geek

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    1. G5
    2. 1.3.0
    3. i7 8750h
    4. 1084
    5. 384
    6. Settling at 3.19 GHz after short Turbo at 3.89 GHz
    7. 0.81 GHz half of the time and 2.1 GHz the other half. It seems to be random, not a throttle mechanism due to heat or power.
    8. AC: 78W during Turbo, 45W after settling down. Battery: didn't really bother to check, but under 20W.
     
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  4. mnewxcv

    mnewxcv Notebook Enthusiast

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    thank you for sharing. As you can see, we are nowhere near a score of 1000 on battery (like notebookcheck review claimed). As for clock speed fluctuation on battery, I believe different parts of the benchmark utilize more of the CPU, and therefore under heavy load the speed drops to 800MHz, while other parts (easy tiles) of the benchmark the CPU can get up to 2.1GHz (still under base clock for this CPU though) while maintaining what I have seen to be under 16W TDP.
     
  5. mnewxcv

    mnewxcv Notebook Enthusiast

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    there must be more than 2 of us with a dell with an 8750h! Please help by adding to the results!
     
  6. Bacunawa

    Bacunawa Newbie

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    I haven't ran any of the test that you've requested; however, I do own the g7 7588 with the i7 8750h and 1060 max q. I did notice the laptop runs signaficantly slower, in game, while on battery. The first time I noticed this was in ghost recon: wildlands. I just thought this was normal. I'll try to get back to this with results.
     
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  7. mnewxcv

    mnewxcv Notebook Enthusiast

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    thanks, any data points are helpful. Even older games stutter quite a bit on battery it seems.
     
  8. Nemix77

    Nemix77 Notebook Deity

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    This took more than 5 minutes to test but here are my results with notes:

    1. G3 3779
    2. 1.2.1
    3. i5-8300H
    4. 822 (battery mode best performance and system cooling policy active)
    5. 362 (battery mode better battery and system cooling policy passive)
    6. 3.89Ghz (minimum processor state 90% and maximum 100%)
    7. 1.49Ghz (minimum processor state 5% and maximum 90%)
    8. AC: 47W maximum and Battery: 14W maximum (HWMonitor and Undervolt -180mv)
     
    Last edited: Sep 3, 2018
    mnewxcv likes this.
  9. AlexanderKim

    AlexanderKim Notebook Guru

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    is 8750h twice better than 7700hq? I'm getting ~550-600 points in cinebench R15
     
  10. mnewxcv

    mnewxcv Notebook Enthusiast

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    on battery or AC? Please use the numbered format so we can keep track of what it is doing. 8750h is about 50% faster. Your score seems about 100 points low. It could be throttling though.
     
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