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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. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    Ah, crap. I don't think we'll be able to get any more information about the panel without actually disassembling the lid. It's a 60 Hz 4K with Adobe RGB coverage, and HDR 600... Only a few results on Panelook.
     
  2. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    I notice unacceptable throttling when stress-testing with Cinebench R23: the Xeon CPU ramps back to base clock and draws 35 W. The fans at full tilt can perfectly cool the CPU—I don't see a problem here. I think I need to see what's happening using ThrottleStop.
     
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  3. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    And ThrottleStop 9.4 fixes the problem! This deep throttling is caused by the MMIO power limits, and these can be disabled by going to FIVR -> Disable and lock Turbo power limits (checkbox on the right). Now the CPU hangs around 75 W effortlessly, and trounces my old Xeon.
     
  4. kbedrich

    kbedrich Notebook Enthusiast

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    Well great... c'mon Dell...
    I did some research on it and found this guy explaining my issue, but with their 7530: https://www.dell.com/community/Prec...Precision-7530-multiple-problems/td-p/7194380
    And also this screenshot, which shows the power draw discrepancy very well: https://i.imgur.com/jfZjALy.png
     
  5. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    zhongze12345 and alittleteapot like this.
  6. kbedrich

    kbedrich Notebook Enthusiast

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    Haha no way! It was the first hit on google when I looked up 7530 battery drain.
     
  7. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    Yeah, I've been quite vocal about it. I even got my 7530 replaced in 2019, a year after I first got my original 7530 to attempt to fix the problem, but no dice. I wanted to try to escalate this to the engineers themselves to see if I could have a direct line of contact with them, but to no avail.

    Incidentally, I don't see this issue on my 7560. Idle power is around 6 W, and I haven't charged the notebook since I unplugged it around 5 hours ago (at 80%), and it's sitting at around 45%. I'm pretty pleased with it, but unfortunately my Windows profiles aren't syncing, so I need to fix that.
     
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  8. kbedrich

    kbedrich Notebook Enthusiast

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    That's interesting. What Nvidia driver is installed?
    I'm also wondering if only the earlier batches of the 7560/7760 have this problem, and not the newer batches. I ordered mine two days after it became available on Dell's website, and I got it delivered late June (two weeks ahead of schedule, too)
     
  9. Ionising_Radiation

    Ionising_Radiation ?v = ve*ln(m0/m1)

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    463.02, the one from Dell. My notebook also came with BIOS 1.2.2 installed as default.
     
  10. kbedrich

    kbedrich Notebook Enthusiast

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    Mine came with I believe the same Nvidia driver (it's the first one that supports the T1200-A5000 series I think), but it came with 1.1.2 installed default. I am on 1.2.2 right now, and I've experienced the odd power behavior on both BIOS versions.
    I slightly remember having very good battery life when I first got the laptop, but one day the battery life just tanked, I'm not sure though, my memory of it is bad.
    I have a feeling it happened when I installed MSI afterburner and messed around with it some. I wish I could factory reset this laptop, but I don't want to go through that long process right now.
     
    zhongze12345 likes this.
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