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Thread: VMode on 8800GTX

  1. #1
    Join Date
    Feb 2008
    Posts
    180

    VMode on 8800GTX

    Having made a quick vmode on my 8800GTX, I wanted to share with you the steps to follow to help you and can motivate the uninitiated. The goal is not to present the vmode the 8800GTX, but rather to show the steps and procedures of this one.

    WARNING: I am not responsible if you toast your graphics card. The experiment is hazardous, you do so knowingly.



    1st Step: The hardware.

    Indispensable to a vmode GPU:

    • Potentiometers
    • Soldering iron 15W or even less
    • Son
    • Screwdrivers
    • Multimeters
    • Pewter


    Not mandatory but strongly recommended :

    • What steps up (get on the old molex power for example or the recup like me)
    • Scotch and / or glue gun
    • Welding tongs


    Here you need a pot of 20kohm for Ram and a 500Ohms of the Core.

    2nd Step: Welds and installation of pot and molex.

    Before addressing the welds on the pcb, you weld on the pot. It will in addition to workout.
    You can use colors to differentiate.
    So I would take for the Black Mass, Red for the Core and White for the Ram.
    • Start by taking your meter and your screwdriver to put your pot to their respective values. Let 20kohm 500Ohms and in my case.
    • Can your pot Core (500Ohms) solder black and red. (Mass and core)
    • On your pot Ram (20kohm) solder black and white. (Mass and ram)
    • And to finish on your molex, solder the black, red and white. (Mass, core and ram)

  2. #2
    Join Date
    Feb 2008
    Posts
    180

    Re: VMode on 8800GTX

    A brief reminder about the interests of molex:
    By thrusting your multimeter in the black and red you will have the power of the Core. And in black and white you would have the tension of the Ram.

    It'll just fix it all properly and securely above.
    For users of glue guns, glue does not everything on the PCB because it will melt in 5 seconds after the card in use.
    I used a small iron bar from scavenged, attached to the GC in order to glue together.

    You must be here:


    3rd Step: Welds on the PCB.

    It's time to leave your boxes and invoice for the VAS. Go one sudden, we mark out the places where we must be welded, and go.
    • Start with the measurement points. I repeat: Black = Ground, Red = Core and White = Ram.
    • Can the Core: Black = Ground, Red = Core.
    • Then the Ram: Black = Ground, White = Ram.

    Here the result:
    You do me the favor to store and fix all that with a bit of Scotch to prevent the son running around everywhere, basically not like myself.


  3. #3
    Join Date
    Feb 2008
    Posts
    180

    Re: VMode on 8800GTX

    4th Step: The tests.

    It remains only to plug everything in your war machine. We catch the multi to verify measurements of Core or Ram. And they light. If everything is OK, you arrive on the desktop and you can read the voltage of the RAM on your Core or Multi. With a screwdriver we vary the voltage a bit to check that all works, and you're ready to bencher like a pro.


    Be careful though not to send too much juice, especially if you use the original cooling.

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