Battery discharging while gaming?

Discussion in 'MSI' started by Phoenix, Oct 12, 2017.

  1. Phoenix

    Phoenix Super Tweaker

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    I remember back in the day when I was looking for a laptop, I was looking at the GT83VR Titan Pro and one of the complaints that I used to read is that the battery gets discharged while gaming as the laptop needed more juice which many complained about because that would kill the battery's lifespan

    whatever happened to that? what did MSI do about that or is it still like this now?

    I've seen ASUS has been doing the same thing and people are not happy......what do you think.....

    https://rog.asus.com/forum/showthre...d-in/page2&s=62791f67ca748aafbaa550745a52d5b5

    https://rog.asus.com/forum/showthread.php?88253-GL502VS-Battery-drain-when-gaming-(on-AC-power)
     
    Last edited: Oct 12, 2017
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  2. Falkentyne

    Falkentyne Notebook Deity

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    All of the Titans will discharge the battery while gaming, depending on the total power draw. The cutoff point where this happens depends on the base video card installed. On the 1080 GT73VR, this happens somewhere around 250W of total system power. On the 1070 version, it happens around 150-170W. I don't know where this happens on the SLI versions. Battery discharge can be completely avoided on the 1070 230W versions by changing the power ID to 330W in RW Everything (offset E3, value 11 on skylake=330W, 11 or 91 on kaby lake (kaby lake EC has the old code from the skylake EC, but not vice versa).

    Exceeding the power ID in total system power forces CPU throttling.

    I don't know how to increase the 330W limit on the 1080 versions. I don't know how to use the "SLI ID" at all.

    Note: Using a value in offset E3 which does not correspond to a known product ID forces 45W unavoidable power limit at all times.

    I was unsuccessful at trying to get a 460W Power limit (1070 SLI) because the SLI version uses the exact same power ID (230W) yet something makes it doubled. Probably the second MXM slot being occupied triggers something that isn't in the EC RAM at all.

    Removing the battery causes a reduced capped AC power limit that seems to be at the point where the 'battery drain' begins. This seems to be set at startup, so changing the power ID to 330W on a 230W system does not avoid the 150W power cap. There "probably" is a more graceful way to avoid this. but the "Gunther me tough. you tough? Ugh work on dem arms yo" way is to run a RW everything script to make the EC think the battery is inserted when it's removed. Just two offsets are needed: Offset 31=09 (turns on the charge light. Offset gets changed to 0B--a value usually never seen. No idea if changing it to 0B directly works. 09 is usually for "battery fully charged 90-100%"), and offset 42=64 (64=100 decimal. This is the battery level in percent. Both must be changed at once to avoid the "Hybrid" AC power cap if the battery is disconnected. I managed to draw 310W total system power on a 1070 system with the battery removed, this way (185W TDP 1070 + CPU AVX load + system power).

    The 1080 (someone has to test this--I can't) probably has as 240W-250W cap if the battery is disconnected, which is set from detection of the 1080. That's why 1070 users can't just change the power ID to avoid it if the battery is removed, since this is set before you even get into windows to change the ID--just change the two battery circuit registers instead).
     
    Last edited: Oct 12, 2017
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  3. Papusan

    Papusan BGA Filthy = That sucks!! STAHP! Dont buy FILTH...

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    NBC.de claims the tested MSI GE73VR 7RF Raider doesn’t drain the battery (7700hq+1070). I expect they tested with P95+Furmark.
     
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  4. Falkentyne

    Falkentyne Notebook Deity

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    How are they going to test that? 115W GPU + 45W CPU=160W....they would need to have brightness at maximum and all USB ports occupied to hit the battery...
     
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  5. Papusan

    Papusan BGA Filthy = That sucks!! STAHP! Dont buy FILTH...

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    Ask the reviewers. Not the first model they testing with 7700hq and 1070 pushing +230W. Maybe a faulty flawed design.
    96B08CC8-C528-45F9-BCAC-7CDB786D9CD1.png
     
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  6. Donald@HIDevolution

    Donald@HIDevolution Company Representative

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    None of the current MSI models use the battery for gaming or otherwise when they are plugged in. That 'bright idea' really bit them where it hurts, so they don't do it anymore.
     
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