SetCPU underclocks CPU to 600mhz from factory 660mhz

Discussion in 'Augen Gentouch' started by Amtek, Sep 4, 2010.

  1. Amtek

    Amtek Member

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    If you install and run the SetCPU app as listed in the wiki, the CPU is underclocked to a max clock of 600mhz from the default 660mhz. You will see the CPU scale between 36 and 600mhz on the screen. SetCPU Long benchmark test score: 1806 ms (lower is better)

    However after much fiddling and by accident, I've discovered that if you edit setcpu.txt with the max clock of 660000 (vs. 600000 as shown in the wiki file) then set the system to sleep and wake it up, you'll notice that the CPU now scales between 36mhz and 660mhz despite the green text saying "600 max 36 min" . SetCPU Long benchmark test score: 1593 ms (lower is better)

    This has been the only way I've gotten the unit to use SetCPU's cpu scaling on demand feature while getting full speed from the cpu when i need it. [Boot up the GT, put it to sleep then wake it up]

    I assume running without SetCPU lets the unit run at 660mhz all the time.

    For reference: I have a GT with a unique MAC address and it came preloaded with the Aug. 4 update, now running Lincs update with Patch V3
     
    Last edited: Sep 4, 2010
  2. sifon187

    sifon187 Member

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    I noticed this as well with my second GT78. I was seeing 660000mhz out of the box through setcpu without root. After I setup setcpu with root access I edit my setcpu.txt to 660000 as the max frequency. For a test I will delete setcpu, reinstall it and prevent it from gaining root access.
     
  3. Childofthehorn

    Childofthehorn Member

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    Yeah guys, posted this same thing in a thread a while ago....
     
  4. cpg716

    cpg716 Member

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    And actually the CPU is rated at 720Mhz. It is being underclocked. The Box and website say the device should be running at 800Mhz, which is totally possible once we get some overclocking going on..

    CPG
     
  5. Draugr

    Draugr Member

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    Hi everyone.

    I want to make sure I understand this...

    SetCPU can't currently be used to set the Gentouch CPU to 720 or the advertised 800 MHZ?

    I'm new to the tablet scene and before I go tinkering with SetCPU I wanted to know if it is possible to get the 720 or 800 MHZ speed out of it?

    Also, why would you want to underclock your tablet? I can only think of it using less battery power, is there any other reasons?

    Thanks
    John
     
  6. tipstir

    tipstir Senior Member Developer

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    Most of them came with just 600MHz even though the box reads 800MHz. Now with it Rooted I get 660MHz.
     
  7. Carbira1

    Carbira1 Member

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    How did you get it to read 660?
     
  8. cutterjohn

    cutterjohn Member

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    It "reads" occasionally 660MHz after "sleep" in the setCPU app. Personally I'm inclined to believe that this is a setCPU app bug given that while I have recently observed this phenomena I didn't also verify it from /proc/cpuinfo. The setCPU app maintains 600MHz as max even after briefly seeing the 660 readings.

    Gods! vbulletin sucks!
     
  9. Carbira1

    Carbira1 Member

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    Ok have to wait for an update then.
     
  10. tipstir

    tipstir Senior Member Developer

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    Android Info Sys Can tell you what the speed is also. Current FREQ below shows: 660MHz

    [​IMG]
     
  11. tipstir

    tipstir Senior Member Developer

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    This is from SetCPU (note the image in the prior post had to be cropped)

    [​IMG]
     
  12. Amtek

    Amtek Member

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    Factory speed is 660mhz, despite the 800mhz advertised

    If you install setcpu it will underclock it to 600mhz but will allow the device to scale all the way down to 36mhz to save power when possible. Its a bug with SetCPU because after you put the GT to sleep and then wake it up, it will then scale between 36 and 660mhz again. I verified it with the benchmark scores in my OP.
     
  13. tipstir

    tipstir Senior Member Developer

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    I don't have SetCPU running my default is now 660MHz that 36MHz is active to save power. When I had purchased the device, it was only 600MHz after the P-Patch/Rooted ROM v3 not anymore.
     

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