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 BGABOOKS = 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 BGABOOKS = 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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  7. ickibar1234

    ickibar1234 Notebook Consultant

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    Falkentyne says it is still happening. What a mess. I thought they would stop after, what was it, the GT72 doing it. Imagine you turn on distributed computing on the CPU cores and GPU and in the morning you have a battery at 30%. I don't have such a laptop yet myself.
    I haven't heard of the MSI GS series doing that. Hope it doesn't. 7700HQ + 1070m shouldn't max out the 180w AC adapter, but what if you grab power from all the USB ports and thunderbolt too..
     
  8. Donald@HIDevolution

    Donald@HIDevolution Company Representative

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    ***CORRECTION***

    I inquired back to the MSI engineers at HQ, and got this reply: " Okay I got an update for this and the GT73VR 7RE does in fact use hybrid power as does the GT83VR just in case you run into an inquiry for that model."
     
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  9. Papusan

    Papusan BGABOOKS = That sucks!! STAHP! Dont buy FILTH...

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    We talk about MSI:cool: As expected, Sir!! The lead star for...
    [​IMG]
     
  10. Falkentyne

    Falkentyne Notebook Deity

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    There are two "ways" to stop it.
    If you have a GTX 1070 and a unit with a GTX 1080 available on the same mainboard (GT73VR, GT75VR), go to RW Everything->EC RAM->Offset E3 and increase the value by 1. This will enable the 330W PSU power cap and prevent any hybrid draw under 230W. This is great for 1070 owners. This only works on mainboards which have a 1080 configuration available. An improper "ID" set at offset E3 will enforce 45W TDP CPU limits at all times and will forcibly ignore anything in the Bios, Throttlestop or XTU.

    If you have a TDP modded GTX 1070, or a GTX 1080 stock or not, remove the battery cable connector (when unplugged and off, do not do this if the AC is still connected under any circumstances), use AC adapter, reboot, set RW Everything EC RAM offset 31 to 09 (required), and EC RAM offset 42 to 64 (required). Both must be done. This will trick the laptop into thinking the battery is connected and will remove the hybrid cap power throttling which usually occurs when the battery is below 30% or disconnected, which is usually a VERY low power cap, which will throttle the CPU hard if it's exceeded. (64=100 decimal btw). There is no direct way to stop all hybrid draw if you have a GTX 1080, but a disconnected battery trick forces the laptop to use all available power from the wall, if the two EC registers are changed. You may be able to reduce it drastically by going into the unlocked Bios, going to Power and performance, GT power control, and set RC6 render standby to disabled. This may also require enabling the iGPU in System Agent (change from Auto to enabled). This will have no effect at all on the system whatsoever, except the Nvidia GPU reading as "GPU1" instead of GPU. The iGPU will be dormant.

    P.S. On GT73VR and GT75VR, to stop the silly ass black screen bug when changing certain Bios options then switching to the iGPU then back to the dGPU, enable PEG port 1 (change from auto to enabled) in system agent, but this is off topic now.
     
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