Precision 7560 & 7760 Owners' Thread

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

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Which Precision do you own?

  1. 7560

    50.0%
  2. 7760

    50.0%
Multiple votes are allowed.
  1. zhongze12345

    zhongze12345 Notebook Evangelist

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    @Ionising_Radiation Could you update us about the CPU undervolting? Has it caused you any issues/unstability? I'm interested in undervolting but I also have to weigh the pros and cons of not being able to update the BIOS in case they block undervolting in a future BIOS update.
     
  2. Ionising_Radiation

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

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    No instability (so far), I have set a -50 mV undervolt. There's no real performance improvement either, as my ambient temperature delta is quite high (30 °C without air conditioning, 18 °C with).

    The undervolt did temporarily disappear during the UEFI debacle last week, but I followed these instructions unclewebb posted a few pages ago to rewrite to the EFI variables, and all was okay again. I did have to also sign the linked grubx64.efi executable with my own keys to make sure it booted, so there...
     
  3. Aaron44126

    Aaron44126 Notebook Prophet

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    I think the steps that have to be taken are "obscure" enough that this isn't something that Dell will "patch out" with future BIOS releases. You don't really need to worry about this too much until Dell actually breaks it ... only at that point would you have to decide if you want to stick with the last working BIOS version, or give up undervolting.
     
  4. Ionising_Radiation

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

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    I was just thinking of this and was about to add it in. These machines have been released a year and a half after the Plundervolt CVE was announced publicly (December 2019), and the firmware can still be bypassed to get the undervolt working.

    I really doubt Dell will patch this, because the procedure to get it working again is obscure enough.
     
    Last edited: Sep 7, 2021
  5. Razibus

    Razibus Notebook Consultant

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    Could you elaborate on your battery settings?

    If anybody has the 4k screen and has calibrated the screen, could you share your ICC profile please?
     
  6. Aaron44126

    Aaron44126 Notebook Prophet

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    I have a custom battery profile set up. It's set to not charge if the battery is above 85% and to stop charging at 90%. The purpose here is to prevent "topping off" the battery (that does the most damage in the charging process) and also to prevent it from starting a charge cycle if I just move the system from one outlet to another nearby (the system didn't have very much time to discharge). I used to have something more like 70/90 but I found that if the system goes too long without ever charging, then the OS will start reporting the battery charge level much higher than it really is, and the system will run out of power quickly when I actually need to use the battery.
     
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  7. ccvortex

    ccvortex Notebook Evangelist

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    I just use the Adobe RGB profile built in to the Dell Premier Color control panel and am having pretty good results.
     
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  8. Chin_Chan_Lee

    Chin_Chan_Lee Notebook Enthusiast

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    What solutions have people come up with for cleaning the speaker grill? I don't want to wait for it to get too bad before I decide figure out how to clean that.
     
  9. ceasar2k6

    ceasar2k6 Notebook Guru

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    If your laptop is plugged in all the time and only unplugged from power when it's shutdown, what would you recommend I do with the battery? I have the one with 3 year warranty one... not the quick charger version.
     
  10. Chin_Chan_Lee

    Chin_Chan_Lee Notebook Enthusiast

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    I'd say just keep it in the computer. It's not that heavy considering the weight of the laptop, and incase of a poweroutage, your computer won't shutdown on the spot like a desktop would.
     
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