Has anyone successfully overclocked p7805u CPU?

Discussion in 'Gateway and eMachines' started by andros_forever, Aug 21, 2009.

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  1. kravis

    kravis Notebook Guru

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    Hey guys, I have uploaded the modified P78 9C.17.00 bios (based on iATA's bios collection) that has the EIST switch unlocked. It also includes the flash program and a batch file to run so all you need is to pop these files into a bootable usb stick with MSDOS, boot from the usb and run the batch file.

    If all goes well then you should be able to turn the EIST on and off using the ThrottleStop program created by Unclewebb to enable the Dual IDA function to squeeze the most performance out of your CPU

    P78_9C.17.00_EIST_Unlocked.zip

    As always, please flash at your own risk and have a Crisis Disk ready in case something goes wrong! :eek:

    To give you an idea on what's possible with a 2.26GHz P8400 CPU and Dual IDA enabled:

    P8400_401FSB.jpg
     
  2. moral hazard

    moral hazard Notebook Nobel Laureate

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    Is that stable @1V?
     
  3. googzy

    googzy Notebook Enthusiast

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    hy guies ! is that working on a packard bell ipower gx q005?? it looklike the same ... so i hope it work ^^ . i really want to overclock my q9000! so if it's good i flash the bios and it's so cool !
     
  4. lpnowlan

    lpnowlan Notebook Consultant

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    Seems like that file is corrupt or something, can't extract it with 7zip or Izarc anyway... :(
     
  5. bus_dr1v3r

    bus_dr1v3r Notebook Consultant

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    wirar extracted it just fine
     
  6. kravis

    kravis Notebook Guru

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    Sorry I used the LZMA2 compression with 7zip before. I just re-uploaded it as a zip so hopefully it's easier to extract now.
     
  7. lpnowlan

    lpnowlan Notebook Consultant

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    Works now... used winrar. Thanks!
     
  8. Blackgillan

    Blackgillan Notebook Guru

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    I guess I didn't understand it right, I'm really a newby on this stuff, but you overclocked the P8400 just with flashin a mod bios and after using only software throtlestop?:confused: :confused:

    I saw 3.6 ghz on a P8400? :eek: :eek: :eek:

    People with a x9100 are getting that at max!

    How the temps?:confused:

    I am really confused by now.
     
  9. kravis

    kravis Notebook Guru

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    Hi Blackgillan, well you are partly right.
    With the modified bios and throttlestop you can run the P8400 at 2.4GHz max at full load. With the original bios, the P8400 would run at 2.26GHz max at full load.
    To overclock to super high clocks, you'll need to tweak memory settings, do voltage modifications on your CPU and enable overclocking by doing a hardware modification on the clock generator IC.

     
  10. kravis

    kravis Notebook Guru

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    CPU-Z won't always show the actual voltage if you do a VID mod so I believe it's actually running a whole lot more than 1V, more like 1.3v, otherwise it wouldn't be stable enough to even get a screenshot at 3.6GHz!

    I do notice that even with Dual IDA enabled, the voltage displayed in CPU-Z fluctuates between 1.000v and 1.138v, which I can't explain yet.

     
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