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Precision 7560 & 7760 Owners' Thread

Discussion in 'Dell Latitude, Vostro, and Precision' started by hoxuantu, Jul 8, 2021.

?

Which Precision do you own?

  1. 7560

    50.0%
  2. 7760

    50.0%
Multiple votes are allowed.
  1. jack574

    jack574 Notebook Evangelist

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    Also @Aaron44126 - another question (sorry) - without Hybrid mode, what happens if an application is not able to use the dGPU? Will it not be able to access the intel graphics at all and just not work?

    Thanks again!
     
  2. zhongze12345

    zhongze12345 Notebook Evangelist

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    Does anybody know the minimum power required to charge the 7760 with USB-C? I tried a 45W USB-C charger (charged my XPS 15), but it doesn't charge my 7760.
    And am I the only person who likes the barrel connectors over USB C for power because of their sturdiness? USB-C cables are so easy to bend, which would require buying a new charger (pretty sure the usb c cable is part of the charger)
     
  3. zhongze12345

    zhongze12345 Notebook Evangelist

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    It should be able to use any GPU, which in the case of the iGPU being turned off, means the program will use the dGPU.
     
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  4. jack574

    jack574 Notebook Evangelist

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    Cool, thanks mate
     
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  5. summersun

    summersun Notebook Geek

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    Windows Memory Diagnostic seems to freeze up if I choose F1, Extended, F10. It goes to 21% and then freezes. I have to use the power button to restart the machine. (I left the extended test running overnight.)

    If I run Windows Memory Diagnostic with Standard instead of Extended tests, it runs and completes fine.

    (Dell Memory is 2 x 8 GB, 16 GB total, 3200 MHz)
     
  6. Aaron44126

    Aaron44126 Notebook Prophet

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    Regarding multitasking with the iGPU, I guess that's a fair point, but the disparity between their capabilities is pretty great. Having the iGPU "available for use" in case you are pushing the dGPU hard could be beneficial... but the amount of work required from the dGPU to "run basic desktop apps" is miniscule so I don't think that it would affect your computer workload much if you didn't have the iGPU available.

    I don't know under what circumstances an application would be "unable to use the dGPU". With hybrid graphics off, the dGPU is the only GPU available and everything will run on it. Just like a standard desktop system with a NVIDIA GPU card.
     
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  7. zhongze12345

    zhongze12345 Notebook Evangelist

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    Looks like undervolting the GPU is possible by tweaking the voltage curve in MSI afterburner.
     
  8. Aaron44126

    Aaron44126 Notebook Prophet

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    Have you confirmed that this actually worked and the tool isn't just "pretending" that it worked? (i.e. measured lower power usage or higher clock speed)
    Just asking because previous Quadro GPUs have been quite strict about not allowing this.
     
  9. zhongze12345

    zhongze12345 Notebook Evangelist

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    So far, it seems to work since right now, I increased the clocks by 175mhz for the same voltage. Switching between stock and undervolted, the clocks change by 175mhz.
    It would be nice if somebody else could confirm this
     
  10. zhongze12345

    zhongze12345 Notebook Evangelist

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    upload_2021-8-2_14-16-2.png
    upload_2021-8-2_14-17-16.png
    upload_2021-8-2_14-17-35.png
    upload_2021-8-2_14-20-5.png
    It now sits at ~1730mhz under 100% load while running the Blender benchmark (opendata.blender.org)

    I included some screenshots of clock speeds at random times during the same load.
    CPU was sitting around 30W for all the screenshots.

    It's a 11% improvement in clock speeds compared to stock
     
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