Good news: found a way to increase TDP limit on ezbook 3 pro (N3450 Apollo Lake & N4100 Gemini Lake)

Good news: found a way to increase TDP limit on ezbook 3 pro (N3450 Apollo Lake & N4100 Gemini Lake)

TechTablets Forums Jumper Discussion EZBook series Good news: found a way to increase TDP limit on ezbook 3 pro (N3450 Apollo Lake & N4100 Gemini Lake)

This topic contains 156 replies, has 60 voices, and was last updated by  Fero 1 week, 5 days ago.

Viewing 15 posts - 1 through 15 (of 157 total)
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  • #70328

    joe321
    Participant
    • Posts: 45

    Still need to test this a bit more so I can confirm that there is no danger of bricking, but looks good so far.  I will post instructions in a couple of hours (or maybe few days 🙂 )…

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    #70332

    joe321
    Participant
    • Posts: 45

    I tested with 3dmark05 – some nice improvements:

    http://shrani.si/f/22/To/4TjV6XDk/scores.png

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    #70338

    Chris G
    Keymaster
    • Posts: 2634

    Great news! But please don’t leave us hanging. Yes, I found with that power limit setting off (Civiltop air/tbook air) was the first, it doubles the iGPU performance. Please let us know how to do this? My guess is a bios edit and flash?

    Would love to do this on the Cube iwork 5X I just got.

    Chris | Admin
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    #70339

    Chris G
    Keymaster
    • Posts: 2634

    I was trying myself to get XTU to work or throttlestop. Because on the Core M3’s its easy using XTU and as long as the thermals are good no harm in upping the power limit.

    I also remember there was a bug in some N3450’s that coming out of sleep they had no TDP Limit or the limit went to 10W.

    Chris | Admin
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    #70342

    Chris G
    Keymaster
    • Posts: 2634

    Okay got it working, thanks so much pointing me in the right direction. More on this tomorrow and how to do it as it’s super late here. But I took my iwork5X from 57 FPS HL2 lost coast benchmark to 79 FPS with the power limit tweak. Temps increased as expected. But just the same boost as the Civiltop Air boost.

    Chris | Admin
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    #70343

    joe321
    Participant
    • Posts: 45

    Great job – you realy dont like waiting do you, so you just  figure stuff out by yourself 😀

    I made an .exe which should raise TDP limit to 10W. Put .exe in a new folder as it will generate a few files. The 6W TDP limit comes back after restart or after sleep, but this can be easly solved.

    offtopic: Throttlestop is an great app, I used it on all my laptops, it really unlocks laptop potential, also great for undervolting. Author said it will add Apollo Lake support in the future, but now its summer and he has other things to do.

     

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    #70345

    Chris G
    Keymaster
    • Posts: 2634

    I don’t like waiting 🙂 No it’s mainly because you reminded me of this info I was looking into. Please zip the file and then you can attach it. exe files can’t be uploaded for security reasons. Thank you. Looking forward to testing it.

    Btw latest test, 91 FPS in the benchmark, up from 57 FPS. Very good increase! Remember to set GPU setting to max performance.

    I hope throttlestops does get Apollo Lake support, that would be great.

    Chris | Admin
    Please support us and help keep TechTablets online. Affiliate revenue is used to pay for the server, studio apartment (Techtablets HQ) and buy new tech to review. Without it, this site would be dead.
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    Ordered and waiting for my: ONE-NETBOOK One Mix 2S & AllDoCube X
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    #70347

    sportnok
    Participant
    • Posts: 148

    I got trojan warning from your zip file…

    #70348

    nhk
    Participant
    • Posts: 9

    I got trojan warning from your zip file…

     

    its just a false positive

    #70359

    Chris G
    Keymaster
    • Posts: 2634

    If you don’t want to run the app use this:

    Okay here it is: http://freaktab.com/forum/tv-player-support/intel-based-tv-players/659650-apollo-lake-n3450-tdp-limit-gone-after-sleep-under-window-10?p=661632#post661632

    Based on this info. Download RW – Readwrite everything, then in the command part, post: WRMSR 0x610 0x0 0x00DD8A00 0

    Or create a shortcut and run it with this command RW.exe /Min /Nologo /Stdout /Command=”WRMSR 0x610 0x0 0x00DD8A00 0″

    This is awesome just the breakthrough we needed for the Apollo Lakes, now every one of them can run like the Tbook Air with higher limits. Just make sure you do it on an Apollo Lake with a decent copper heatsink. For example the EZBook 3 Pro, Onda Xiaoma 31,21, Cube iwork5x and Tbook4.

    Commands for TDP limits

    “WRMSR 0x610 0x0 0x00DD8F00” 15W TDP
    “WRMSR 0x610 0x0 0x00DD8A00” 10W TDP
    “WRMSR 0x610 0x0 0x00DD8600” 6W TDP
    “WRMSR 0x610 0x0 0x00000000” Remove all limits

    Not recommended on the Lapbook 12.3 and 14.1. These don’t have copper heatsinks and thermals will get too high!

    Chris | Admin
    Please support us and help keep TechTablets online. Affiliate revenue is used to pay for the server, studio apartment (Techtablets HQ) and buy new tech to review. Without it, this site would be dead.
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    Ordered and waiting for my: ONE-NETBOOK One Mix 2S & AllDoCube X
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    #70367

    joe321
    Participant
    • Posts: 45

    If anyone wants to try 15W limit (I did), do this at your own risk… It should be ok, because we still have thermal throttling , but maybe power delivery wasnt made for this kind of  power…

    When setting 15W limit, my fps in 3D mark 2005 went up by about 10% compared to 10W TDP, the max package power during test was 13W. Thermals did rise a bit – on stock ezbook 3 pro cooling my GPU was hitting 80, and my cpu 78 degrees C – and thats in a short 7 min test in a pretty cool 23 degrees rom. I will probably add a thermal pad to transfer some of the heat to aluminium housing…

    Command to set 15W TDP limit:  RW.exe /Min /Nologo /Stdout /Command=”WRMSR 0x610 0x0 0x00DD8F00 0″

     

    #70371

    Chris G
    Keymaster
    • Posts: 2634

    Thanks for now I’m happy with 10W, on the Cube i33 or iwork5X after 10 minutes of gaming 75 degrees C, which is very good. But it does have a large 1mm thick heatsink. If I was to add a thermal pad between the copper heatsink and the rear case I think it would lower a good 5-6 degrees more. So maybe I could get away with 15W.

    Now I’m going to try this on the Onda Xiaoma 31 Pro Apollo Lake Pentium N4200, see if it works. That CPU is a bit faster and with this mod might reach some really good FPS levels with its extra 6EU cores on the GPU and extra 300Mhz on the CPU!

    Guys, please all post your results here! This is a great switch for those that want to run that Intel GPU at full clocks and be able to play some light games like CS:Go with 60 FPS instead of 30FPS.

    Chris | Admin
    Please support us and help keep TechTablets online. Affiliate revenue is used to pay for the server, studio apartment (Techtablets HQ) and buy new tech to review. Without it, this site would be dead.
    Next up for review:
    Ordered and waiting for my: ONE-NETBOOK One Mix 2S & AllDoCube X
    Currently testing: Mate 20 X & Mate 20 Pro

    #70398

    Razor Blader
    Participant
    • Posts: 6

    This is great information, thanks to the OP and Chris. Confirmed working on the Chuwi Lapbook 14 old revision. No worries about thermals, I modded it with a heatpipe and some other stuff a few months ago and thermals haven’t been a problem ever since (76 degrees Celsius after three hours of Prime 95 stress testing).

    #70407

    Ken
    Participant
    • Posts: 1

    Is it possible to edit other BIOS property with RW as well? I have a Jumper mini 3 with USB disabled, and cannot enable it without a USB keyboard…

    #70411

    Chris G
    Keymaster
    • Posts: 2634

    Ken, no I don’t think so as once you reboot the edit is gone. You need it to be saved to the bios.

    Chris | Admin
    Please support us and help keep TechTablets online. Affiliate revenue is used to pay for the server, studio apartment (Techtablets HQ) and buy new tech to review. Without it, this site would be dead.
    Next up for review:
    Ordered and waiting for my: ONE-NETBOOK One Mix 2S & AllDoCube X
    Currently testing: Mate 20 X & Mate 20 Pro

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