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    Has anyone successfully overclocked p7805u CPU?

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

  1. moral hazard

    moral hazard Notebook Nobel Laureate

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    you can use SPDtool or thaiphoon burner to flash a lower frequency on your current ram. That will make it handle the overclock well.
     
    moral hazard, Aug 31, 2009
    #51
  2. llynx

    llynx Notebook Consultant

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    So how would go about doing that ;) ? assuming I flash my ram to run at a lower freq.
     
    llynx, Aug 31, 2009
    #52
  3. moral hazard

    moral hazard Notebook Nobel Laureate

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    The PLL (clock generator) needs to have one of it's pins disconnected from GND and connected to VDD (1.05V).
    you have to use a 2K resistor between the pin and VDD.

    Once you connect the pin to VDD your FSB will be changed from 266mhz to 333mhz.
    No software is needed after this mod.

    The first step is to find the PLL on the motherboard.
    Then please take a photo of the PLL and post it on the forum.

    I will give you further instructions if needed on the forum after you post the photo.


    BTW the pin I believe will be pin 61 (FSLC).

    refer to the attached table to see how the FSB will change when you change FSLC to 1.

    [​IMG]


    Also read this thread:
    http://forum.notebookreview.com/showthread.php?t=401682

    The modification is basically the same.
     
    moral hazard, Aug 31, 2009
    #53
  4. narsnail

    narsnail Notebook Prophet

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    Haha this is all good and well, but who is going to be the Guinea Pig :)

    It would have been me, but I no longer own a Gateway, we need to conscript someone to do it!
     
    narsnail, Aug 31, 2009
    #54
  5. llynx

    llynx Notebook Consultant

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    So this mod applied to a qx9300 at a standard 9.5x multiplier would be 3.16ghz, and a 11x multiplier would be 3663, but I doubt this mobo can handle it. hmmmmm seems tempting to try

    mhmmmmmm guinea pig yum yum ;9
     
    llynx, Aug 31, 2009
    #55
  6. andros_forever

    andros_forever Notebook Deity

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    haha yea we need someone to volunteer :_) *looks around diverting attention away from himself*
     
    andros_forever, Sep 2, 2009
    #56
  7. ImportJunky

    ImportJunky Notebook Consultant

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    Im thinking about ordering the q9000.. maybe the q9100.. the extreme core would be nice.. but what a waste if it doesnt work.
     
    ImportJunky, Sep 3, 2009
    #57
  8. mew1838

    mew1838 Team Teal

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    Those quads wont work
     
    mew1838, Sep 3, 2009
    #58
  9. moral hazard

    moral hazard Notebook Nobel Laureate

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    why not?
    Is it a BIOS issue?
     
    moral hazard, Sep 3, 2009
    #59
  10. sparkyman2000

    sparkyman2000 Notebook Consultant

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    So yeah its been a while since I have been inside. Where abouts is the PLL? In laptops is it still close to the CPU? I will take a pic before I proceed. I know what it is and I have a resistor.

    Yea going from 2.8 to 3.4 would be cool or even beyond 3.1.

    Quad support in 78xx is not bios its mobo pin layout.
     
    sparkyman2000, Sep 8, 2009
    #60
  11. moral hazard

    moral hazard Notebook Nobel Laureate

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    It's not always near the CPU, just look around for it on both sides of the motherboard.
     
    moral hazard, Sep 9, 2009
    #61
  12. sparkyman2000

    sparkyman2000 Notebook Consultant

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    Aight give me a couple of days its the middle of the work week. It will take a night to take apart. Looking at the sticky on the main page. The one that has the tear down. Can you guess where abouts it is?
     
    sparkyman2000, Sep 9, 2009
    #62
  13. moral hazard

    moral hazard Notebook Nobel Laureate

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    moral hazard, Sep 9, 2009
    #63
  14. Big Mike

    Big Mike Notebook Deity

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    Edit again: see attachments, first is the overal with the PLL circled in red, second is a close up. It's kinda odd in that it's a square format instead of the typical "log" with only 2 sides having pins.
     

    Attached Files:

    Big Mike, Sep 10, 2009
    #64
  15. moral hazard

    moral hazard Notebook Nobel Laureate

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    you are a champion :D
     
    moral hazard, Sep 10, 2009
    #65
  16. moral hazard

    moral hazard Notebook Nobel Laureate

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    how many pins does it have?

    it's hard to tell by looking at the pic.
    are there 64pins?
     
    moral hazard, Sep 10, 2009
    #66
  17. moral hazard

    moral hazard Notebook Nobel Laureate

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    moral hazard, Sep 10, 2009
    #67
  18. Big Mike

    Big Mike Notebook Deity

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    http://www.darksmileysystems.com/downloads/criterion/e-wrecked//9LPRS365-SPEC.pdf

    I think that's e-wrecked's site or one he uses for links, it's a direct link to the data sheet as well. Out of curiosity, you said a while back setFSB doesn't work on Montevina, do you happen to know why? I had found a resistor in the path of the TME enable pin that I thought could be popped possibly to disconnect it from the switching source and turn TME off. And yeah, it's a 64 pin (16x4) PLL.
     
    Big Mike, Sep 10, 2009
    #68
  19. moral hazard

    moral hazard Notebook Nobel Laureate

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    I don't know why setfsb doesn't support your chipset.

    here is the pinout of your PLL (or at least what I believe):
     
    moral hazard, Sep 10, 2009
    #69
  20. moral hazard

    moral hazard Notebook Nobel Laureate

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    Sorry about my last post, it was wrong and now I deleted it.

    let me try again:

    I believe FSLC is pin 5.

    I think I see a resistor that may be directly connected to pin 5.
    use a digital multimeter to test if that is true.

    I have attached an image.

    If it is true then you need to remove the resistor to disconnect pin 5 from GND.

    then you need to connect pin 5 to VDD (1.05V). use a 2K resistor for this.

    now after you do that you FSB should be 333mhz.
     
    moral hazard, Sep 10, 2009
    #70
  21. moral hazard

    moral hazard Notebook Nobel Laureate

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    is TME pin 11?

    if so then yes I also see a resistor comming off it.

    To dissable TME you would have to remove that resistor.
    then you would have to connect pin 11 (TME) to GND to set logic 0.
     
    moral hazard, Sep 10, 2009
    #71
  22. sparkyman2000

    sparkyman2000 Notebook Consultant

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    You sure, Im starting to take my old 7805 apart now.....

    Thanks Big Mike and moral hazard...
     
    sparkyman2000, Sep 10, 2009
    #72
  23. moral hazard

    moral hazard Notebook Nobel Laureate

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    don't start soldering yet, do some continuety tests with a DMM first.

    Did you decide what you will use for VDD?
     
    moral hazard, Sep 10, 2009
    #73
  24. sparkyman2000

    sparkyman2000 Notebook Consultant

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    Oh I wont yet. I just got the heat pipes off. Ill want to do a pin layout and pic layout before I solder.
     
    sparkyman2000, Sep 10, 2009
    #74
  25. andros_forever

    andros_forever Notebook Deity

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    This thread is getting very interesting, keep us posted dudes!
     
    andros_forever, Sep 11, 2009
    #75
  26. Big Mike

    Big Mike Notebook Deity

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    I'd imagine you know this, but also keep in mind that what your eyes can see isn't the whole story, I'm sure the 7805 uses a multi layer circuit board to route everything it has on it.
     
    Big Mike, Sep 11, 2009
    #76
  27. moral hazard

    moral hazard Notebook Nobel Laureate

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    That is true ^^^.

    But usually the tracks have to lead to "holes" in order to change layers.
    Also internal layers don't contain anything except for tracks. so if a track goes into a hole, it has to come out of another hole.

    what I mean by "hole" is those little circles that tracks offen end with.

    Just make sure you have a DMM near by so that you can do continuity tests along the way.
     
    moral hazard, Sep 11, 2009
    #77
  28. Omexis

    Omexis Notebook Consultant

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    Well this would set the TME bit to 0, but unfortunately this pin is also used for the PCI2 3.3V output which is used after the TME pin is sampled at power up
     
    Omexis, Sep 12, 2009
    #78
  29. moral hazard

    moral hazard Notebook Nobel Laureate

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    I did the exact same thing to my PLL. read the thread in my sig.

    I can tell you that most notebooks do not use PCI2. So it doesn't matter if you set logic 0.

    There is a test you can do to see if PCI2 is used. I'm going to sleep now but tommorow I will post how to do it if you want.
     
    moral hazard, Sep 12, 2009
    #79
  30. Omexis

    Omexis Notebook Consultant

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    Yes please moral
     
    Omexis, Sep 12, 2009
    #80
  31. moral hazard

    moral hazard Notebook Nobel Laureate

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    moral hazard, Sep 12, 2009
    #81
  32. Omexis

    Omexis Notebook Consultant

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    mmm, interestingly enough, i set the PCI2 3.3V output to disabled in the register and the laptop seems to be running fine. i dont know if this output is used for the media reader, the spare pci mini express slot i have or some other component not used.

    If that is so, then the hardware mod would work to disable the TME bit to allow overclocking in software
     
    Omexis, Sep 12, 2009
    #82
  33. El_Capitan

    El_Capitan Notebook Enthusiast

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    I concur with Omexis, laptop is fine after disabling PCI2 3.3V output. I don't use a media reader or spare pci mini express slot, but my 3 USB ports, eSATA, and HDMI outputs work fine.
     
    El_Capitan, Sep 12, 2009
    #83
  34. moral hazard

    moral hazard Notebook Nobel Laureate

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    yes, I thought so.
    That is very common I find.
    You can all feel free to dissable your TME.


    Here is my question:
    most people say that setfsb doesn't support your chipset. So do you think you're just wasting your time on the TME pin while you could have overclocked to 333mhz by now?
     
    moral hazard, Sep 12, 2009
    #84
  35. moral hazard

    moral hazard Notebook Nobel Laureate

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    when you dissable PCI2, you're not dissableing a PCIe bus.
    Don't get that confused.
     
    moral hazard, Sep 12, 2009
    #85
  36. El_Capitan

    El_Capitan Notebook Enthusiast

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    Well, I'll try the hard mod sometime tomorrow and see how it goes.
     
    El_Capitan, Sep 13, 2009
    #86
  37. moral hazard

    moral hazard Notebook Nobel Laureate

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    which one. the TME mod or the FSLC mod ?
     
    moral hazard, Sep 13, 2009
    #87
  38. El_Capitan

    El_Capitan Notebook Enthusiast

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    Both. I'll try the TME mod first, then see if I can overclock using setFSB (using the ICS9LPRS355BGLF)? If that doesn't work, I'll do the FSLC mod (if that works and is stable, I might as well see if the FSLB mod for 400MHz works and is stable).
     
    El_Capitan, Sep 13, 2009
    #88
  39. moral hazard

    moral hazard Notebook Nobel Laureate

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    you may have to overvolt to get the 400mhz FSB.
    also you may need to flash your ram.

    the best tools for flashing ram are SPDtool and thaiphoon burner.
    they let you change everything about the ram, timmings, frequency, voltage (don't change that)...

    A CPU pin mod will be the best volt mod for you. what CPU socket do you have, any chance it's socket P?


    Also after you do the TME mod, please let me know. I can help you manually configure the M/N programing registers to overclock.,
    Also you may want to email abo (creator of setfsb) about getting setfsb to work. I have emailed him many times, very helpfull guy.

    good luck,
    MH
     
    moral hazard, Sep 13, 2009
    #89
  40. El_Capitan

    El_Capitan Notebook Enthusiast

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    Yeah, I'll see what my temps get to be at 333MHz FSB and make a judgement call to see if I want to try 400MHz.

    CPU socket is P (478).

    Yup, I have to pick up a smaller soldering iron tomorrow (I have an old one from my Navy days). Probably a new DMM wouldn't be a bad idea. If the TME mod works, I'll e-mail abo (contacted him before, he is pretty helpful - nice fella).

    Thanks,
    El_Capitan
     
    El_Capitan, Sep 13, 2009
    #90
  41. moral hazard

    moral hazard Notebook Nobel Laureate

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    here is a link to volt mod instructions:
    http://forum.notebookreview.com/showthread.php?t=390696

    read the part for socket P CPUs.
    when you've finished reading, find what your current default voltage is and let Naton (creator of thread) know. He will probably help you with further instructions on how to increase the voltage.
     
    moral hazard, Sep 13, 2009
    #91
  42. El_Capitan

    El_Capitan Notebook Enthusiast

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    Well, not looking good so far. I made a good connection from Pin 11 (from lifted resistor leg) to Pin 49. Turned the laptop on... rebooted itself, nothing on display, and still had power going but nothing was happening. Not good.

    I checked the board, and the soldering was perfect, but removed the connection and still same results. Definitely not good.

    Checking the board again, in the process of previous tries, I scraped a connection from Pin 13 to it's lifted resistor leg. When removing the TME mod connection, the lifted resistor leg also no longer has a connection with Pin 11.

    Have 2 things to fix before trying again.
     
    El_Capitan, Sep 13, 2009
    #92
  43. moral hazard

    moral hazard Notebook Nobel Laureate

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    that happened to me.
    It turns out the connection from my TME pin to GND was not good. The TME pin was getting no signal.

    I added more solder and it worked fine the next time I booted up.

    I suggest you double check your work with a DMM.

    be carefull, please don't rush it. take your time.
    If you're having trouble, take a break and come back later.

    Don't kill your motherboard.
     
    moral hazard, Sep 14, 2009
    #93
  44. ImportJunky

    ImportJunky Notebook Consultant

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    man I hope you get that figured out, Good luck!

    Really looking forward to the results.
     
    ImportJunky, Sep 14, 2009
    #94
  45. Omexis

    Omexis Notebook Consultant

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    Could it be possible that the Bios checks the TME bit from the registers when rebooted and fails to continue because its programmed not to?
     
    Omexis, Sep 14, 2009
    #95
  46. moral hazard

    moral hazard Notebook Nobel Laureate

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    It's possible, but not likely.
     
    moral hazard, Sep 14, 2009
    #96
  47. mew1838

    mew1838 Team Teal

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    Bump!! any news?
     
    mew1838, Sep 21, 2009
    #97
  48. andros_forever

    andros_forever Notebook Deity

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    Yea, really looking forward to a possible positive outcome :)
     
    andros_forever, Sep 26, 2009
    #98
  49. chadharts

    chadharts Newbie

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    hey im new here but i have one ? does anyone know why the cpu is underclocked by 26% and guess no one has fund software to overclock the cpu i have alread overclock my gpu and it runs great
     
    chadharts, Sep 26, 2009
    #99
  50. mew1838

    mew1838 Team Teal

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    its speedstep, google it.
     
    mew1838, Sep 26, 2009
    #100
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