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    **GE75 8th** Shunt mod or VBIOS flash

    Discussion in 'MSI' started by LeonS3, Nov 27, 2020.

  1. LeonS3

    LeonS3 Notebook Enthusiast

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    Hi guys.

    I own a GE75 8SE with the RTX 2060 and I’m looking to push the card a bit more.

    I’ve seen vbios with 115w lately but I don’t have the knowledge to understand if I can flash it or not.
    Also I’ve seen some people shunt mod their laptop gpu.

    so what to do? :p

    Best regards,
    Leon
     
    LeonS3, Nov 27, 2020
    #1
  2. ryzeki

    ryzeki Super Moderator Super Moderator

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    The BIOS is reversible, the shunt mod depends totally on your skills. I botched mine so I have a permanent unlocked 2080MQ that runs quite hot, which happened because I was not careful enough when "undoing" the mod.

    My advice would be to try the bios first, and as you get a hand of the overall performance/power/thermal increase and decide you can take it, do the shunt mod to have a permanent job done :) But I do advise a liquid metal repaste if you do, to keep the best possible temps.
     
    ryzeki, Nov 27, 2020
    #2
  3. LeonS3

    LeonS3 Notebook Enthusiast

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    Thank you for the detailed answer @ryzeki :)

    Well somehow I managed to keep my GPU below 52c under full load and cpu between 50-58c .

    From my research I found that for 2060 there are 3 VBIOS (80w.90w.115w)
    I have the 80w and my plan is to upgrade to the highest possible TDP., in that case the 115W. The thing is that I can’t understand if I can flash the 115w and do the shunt mod or not :p

    As for the shunt mod I will pay a guy who’s job is to solder and has amazing skills on that but I need to tell him what to solder and where :p

    Sorry for the long answer.
     
    LeonS3, Nov 28, 2020
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  4. senso

    senso Notebook Deity

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    Your VRM's wont be able to dissipate/handle much more than 115W load, so why shunt mod after flashing the 115W VBIOS?

    Its not like your VRMs will be able to do 150W without burning up, and with 115W unless your core is real crap you will hit the 2.1Ghz clock limit..
     
    senso, Dec 3, 2020
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  5. LeonS3

    LeonS3 Notebook Enthusiast

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    Sadly I can flash only the 90W because I have different GPU ID from the refreshed.

    If I shunt mod the GPU I will exceed the 115w ? If so how can I calculate which resistors to use to settle it to one desired power draw?
    Thank you for the answer @senso
     
    LeonS3, Dec 3, 2020
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  6. seanwee

    seanwee Father of laptop shunt modding

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    Why was I not mentioned :/

    @LeonS3 @senso the GE75 can definitely handle a shunt mod to 115w

    You can do a 25% shunt mod by replacing the R005 resistors with R004 resistors. That will bump you up to 100w with an 80w vbios or 112.5w with a 90w vbios
     
    seanwee, Dec 22, 2020
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    conker_ts and LeonS3 like this.
  7. LeonS3

    LeonS3 Notebook Enthusiast

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    currently I have the 180w brick, with the 100w on GPU will be able to handle that? Thanx again for the answer!
     
    LeonS3, Dec 22, 2020
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  8. seanwee

    seanwee Father of laptop shunt modding

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    NP, and 100w yes, 112.5w is fine even if you're just gaming and not stressing both the cpu and gpu.
     
    seanwee, Dec 22, 2020
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    LeonS3 likes this.