Precision 7530 & Precision 7730 owner's thread

Discussion in 'Dell Latitude, Vostro, and Precision' started by Aaron44126, Jun 27, 2018.

  1. Soromeister

    Soromeister Notebook Enthusiast

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    Hello, that is a nice mod you've got there. I've got 2 questions for you:

    - How did you upgrade the vBios? I've got an NVidia p5200 and I'm interested on how I can do this.
    - Could you please go into advanced power options and under the PCIe Link State Power Management, make all the entries "Maximum Power Savings" and then test the benchmarks again while checking on the temperature?

    I'm more interested on the first question though as I have no idea where I can get the vBios files for upgrade.

    The second question though is related to the issues I've been having with the PCH diode temperatures staying at 100°C as mentioned in my previous post here.
     
  2. Aaron44126

    Aaron44126 Notebook Prophet

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    This tweak is specific to the Quadro P3200 in the 7530. You can get a speed boost by applying the vBIOS taken from the 7730 version of the P3200, which has a higher power limit and clock speeds.
     
  3. Yves_

    Yves_ Newbie

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    First of all Thank you ;-)

    About the vBios, like @Aaron44126 already said it was pretty easy for me since I could use the vBios File with higher boost speeds from the 7730. For your 7730 P5300 I think you could give TDP Tweaker 1.12 a spin and toy around with the Target Power / Power Limit values and then use a hacked version of nvflash which does not check for the signature of the vBios. But be aware if you don't know what you are doing, you can easley brick your GPU.

    About the PCH I just read your post, how did you manage to messure the temperature of this PCH? Since I run a fully loaded M.2 config as well, it could be interessting to see my temperatures.

    //Edit: Just found it - sorry. Using HWiNFO instead of HWMonitor :)
     
    Last edited: Nov 6, 2019
  4. Soromeister

    Soromeister Notebook Enthusiast

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    I use AIDA64 to read the PCH temperature. It will show up under the "Sensors" for the temperature. Sometimes, it will disappear from there, so I'm not sure if you need a driver installed for it to appear, but for me it's there (Either listed as "PCH", or "PCH Diode").

    [​IMG]

    For the Precision 7730, if the PCIe Link State Power Management is either set to OFF or Maximum Performance, the PCH temperatures stay at 100°C in idle and going up to 130°C causing a power cut at one point as well as multiple thermal throttling.

    Once that is set to Maximum Power Savings, the PCH temperature will go up to 80°C under full load (Sometimes 85, but never seen it higher than this).

    Taking out the NVMe drive that's near the RAM memory will make the PCH stay in idle at around 47°C, which is a huge difference (With the PCIe Max Power Savings it idles at around 54°C with the NVMe drive inserted).

    As you can see from the picture, the NVMe drive with the amber color that sits near the RAM is actually below the PCH diode. Keeping electricity flowing through that storage unit will make it hot all the time and coupled with the diode on the other side which also gets hot as it handles all the I/O, you get temperatures to skyrocket.

    Dell could make an updated BIOS which can force that specific connector to sleep aggressively, but this can also be fixed with a Windows 10 Setting. Ah, one more thing, Windows has a service called SysMain (Formerly known as Superfetch). You need to disable that as well as it proactively polls the storage units for data that can be loaded into memory. Given that these are NVMe drives, the Superfetch will not make it faster as they are already fast enough. Without disabling this service as well as setting the power options for the PCIe, CPU will probably go up to 85°C and you still get thermal throttling because of this PCH diode going into "lava" temperature.

    Hope this helps anyone that has temperature issues with this machine. It has been driving me crazy for the past year and I never thought that this could be easily solved via setting up 2 options in the system.

    Please try these 2 settings and let me know if you still get any thermal throttling (You shouldn't).
     
    Last edited: Nov 6, 2019
  5. Aaron44126

    Aaron44126 Notebook Prophet

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    @Soromeister
    Those are nifty NVMe heatsinks. Did you do any before/after temperature measurement to see how much they help?
     
  6. Mel1k0r

    Mel1k0r Notebook Enthusiast

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    @Soromeister
    Any reason you are not using the free slot beside the battery? Is it slower somehow?
     
  7. Soromeister

    Soromeister Notebook Enthusiast

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    Those heatsinks are too thick and thus the cover is hard to close so I removed them. The stock ones work fine as long as I use those 2 settings mentioned in my previous post.

    But I am using it. It's the amber/yellow heatsink from the picture. Underneath it, there's the NVMe drive. It's only used as a general purpose storage drive and I rarely access it. When I use it, the PCH temps will go up to 100°C and above, but I rarely use it and when I do, I won't use it for a prolonged amount of time.
     
  8. Mel1k0r

    Mel1k0r Notebook Enthusiast

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    I'm talking about the highlighted slot.
    7730.png
     
  9. Yves_

    Yves_ Newbie

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    @Soromeister : Okay, I did as told. And it had a interessting impact. I can now go even higher with the undervolting. Highest runs where about -0.185V did only 5 runs but seamed stable. Was also able to achieve an ever higher score in Cinebench R15

    [​IMG]

    Package TDP dropped below 70W (i think 67W) on Full Load and I am still below 80°C on 5 runs after each other. PCH Temp is around 80°C as well when doing all this runs.
     
  10. Yves_

    Yves_ Newbie

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    But if I do long runs... like Cinebench R20 or Stress Tests, CPU Temp is still not going over 80°C but Power Limit Throtteling is killing me...

    I wish there would be a way to turn it off. Or at least set it to 75W.... because with all the undervolting I would be below :)
     
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