How do I effectively underclock my phone?

Discussion in 'Droid Bionic Hacks' started by cp24eva, Nov 8, 2011.

  1. cp24eva

    cp24eva Member

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    Hi all. I rooted my phone and I am using a custom ROM (Th3ory) and I want to get a tad bit more juice out of my phone. It's snappy as it is and I think I could deal with a bit more slowness coming from it. So I will be using SetCPU. Any tips?
    Also, does unthrottling cause battery drain as well? If so, how to I UN-unthrottle? (does that make sense?)
     
  2. jayman350

    jayman350 Member

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    no you cannot under or overclock the Bionic b/c of the locked bootloader. If the bootloader was unlocked then you would be able to load a custom kernel onto it and throttle it however you want.
     
  3. shenanigans9001

    shenanigans9001 New Member

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    Well, you can somewhat overclock but you're limited to the moto kernel until the bootloader is unlocked like what jayman350 said. You can still use apps like setCPU or droid overclock (i use setCPU, used to at least). the only problem is that since bionics have a dual core processor, the apps can only control one core so while you can have one run at 600 mhz the other one will still probably be running at 1 ghz. Again, until we find out how to install custom kernels, were stuck with 300, 600, 800, 1000 mhz
     
  4. cp24eva

    cp24eva Member

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    Ah I see. I ok. Well it was worth a try.

    Sent from my DROID BIONIC using Tapatalk
     
  5. kamisan

    kamisan Member

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    :) You can change from the moto kernel control.... and it controls the processor(s) - dual core is not really a dual processor it is dual core with a single bus interface and a single linked cache. The OS sees it as two processors and most apps use just one unless they are specifically written to use both. Speed wise there linked to each other- Check out wikipedia or intel or amd to learn what dual/quad/etc core processors are and are not.
    When you change the speed of one, it changes it for all. (anyone a pc overclocker does not speed up or slow down one core, the change interface speed, the bus speed (which is the core bus) and the voltage to make the chips behave at the new speeds.

    The locked bootloader does not mean you cannot underclock. It does mean you cannot change the kernel to one with features not currently on the stock kernel. That being said yes you can underclock. Set CPU crashed and locked up ALOT and does not play well with mot_hotplug (the stock governor) The stock kernel cannot be overclocked yet since to do so would run it outside its written parameters. Underclocking is within its written parameters.. So you can underclock it. I do and have since I rooted mine day two after buying it. ( I gave stock 886 a chance, it was bad, 893 is better)

    the phone stock has 4 slots for the processor included. 300 (slot1) 600 (slot2) 800 (slot 3) and 1000 (slot 4)

    I played with a few apps and Jrummy's Android Overclock has worked the best for me. You might have a different experiences. Again mot_hotplug is not the governor you will want. On demand is.

    Android Overclock gives you the options for using all 4 slots and all the available governors the shipped kernel supports.
    If you run a th3ory rom it has the mod pack that also lets you change governor to one that is like the on demand. the overclock app has mot_hotplug hotplug ondemand, userspace and performance governors you can check.

    You will want to enable and boot and add profiles.
    I use in call 800-1000
    battery <25% 300-600
    screen off 300-600 and
    charging fill 600-1000.

    When my screen is off I loose about 10% in 4 hours. Which with the spotty 4g in my area is GREAT compared to without it. I set my sampling rate at 30000 up threshhold at 95 and powersave bias at 0 and check ignore nice load and apply at boot (all found in the advanced extra settings)

    Hope this gets you on the path to more battery. Also if your running Th3ory rom there is a script to change from Mot_hotplug to a conservative cpu governor , read the OP on his rom it will show you how.
     
  6. cp24eva

    cp24eva Member

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    You seriously need to make a sticky if you haven't already. That is if this is all true. Thank you for sharing your experience with us. I may have to tailor my use according to this. I don't mind my extended battery but there aren't any cases I like for the extended battery. So juicing up my stock battery is still a possibility with your advice. Thanks again

    Sent from my DROID BIONIC using Tapatalk
     
  7. cp24eva

    cp24eva Member

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    I just bought the app and applied all the setting you had. This is actually a slick app. Very cleaning looking too. Lot's of options
     
  8. jayman350

    jayman350 Member

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    thanks for the info kamisan, I did not know probably half of that stuff.

    I stand corrected, apparently you can underclock the Bionic.

    cp24eva, have you checked out the TPU cases for the extended battery? I picked one up and they are very nicely made, a little difficult to get off once it is on the phone. It also doesn't add a whole lot of bulk to the phone. TPU Cases
     
    #8 jayman350, Nov 9, 2011
    Last edited: Nov 9, 2011
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