Root Are SetCPU basic settings a placebo on Snapdragon?

Discussion in 'Android Devices' started by rushmore, Aug 25, 2010.

  1. rushmore

    rushmore Well-Known Member
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    Note: Referring to battery life and not OC function.

    Loved the app for the G1, since it was capped and setcpu got it to run at max speed. Ditto for Droid, since it was also capped and the OMAP had plenty of ceiling for more speed.

    The Snapdragon is already designed to dynamically scale from 245mhz to 1ghz, so what good are the settings, if Snap is already detecting resource needs and adjusting clock accordingly? This function is built into the die and seems no need for software augmentation.

    I appreciate insight, since some of the posts I have been seeing may suggest something that Snap already was designed to do and is built into the hardware.

    BTW, all of the needed polling that must happen through software for profile conditions may offset any gain as well. Seems inefficient managing via software, when the chipset already dynamically manages- unless Snap does a poor job in the first place.
     

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  2. TheWhiteBandito

    TheWhiteBandito Well-Known Member
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    It won't do anything if you don't have an overclocked kernel installed. I don't see the use in it if you're on the stock kernel. However, I am overclocked to 1.15GHz and it is certainly not a placebo.
     
  3. rushmore

    rushmore Well-Known Member
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    Good point, but referring to battery life (sorry for no clarification). I see posts though, assuming that just because they are rooted, SetCPU is working wonders for them for battery life. Then again, if they are happy (regardless of actual results) it is all good :)
     
  4. TheWhiteBandito

    TheWhiteBandito Well-Known Member
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    Ah right, I see. Well I'm thinking it would be a placebo for battery life. Snapdragon is designed to scale (just like you said) it's frequencies based on usage. If you really want to save even more battery life, get the Hydra Undervolted stock speed kernels and don't use SetCPU with it (that will cause problems).
     
  5. necosino

    necosino Well-Known Member
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    Well if you set it to underclock when your battery life is lower, it is going to extend that portion of your battery life for a longer period. For example, under profiles I have it scaled down to 350 max when the screen is off, 275 max when the battery is over 47*C, 600 max when battery is <25% and 750 max when battery is <35%.

    By lowering the CPU max threshold during these times, it will use less power and draw out that portion of the battery life.
     
  6. yojoe600

    yojoe600 Well-Known Member
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    agreed ^ i do the same thing and it makes a difference.. i just have different settings
     

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