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Thread: MSI 7900GTO Vmem mod

  1. #26
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    Wonder if MSI did a half assed job replacing those resistors on my card or sth as it was whining since start in some games, most likely was a bad cap somewhere tho. Really hope they'll send a new card, wonder how it clocks, this one clocked very good on mem, up to 850 on stock volts but core only went stable up to 690 or so.
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  2. #27
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    Thumbs up

    Quote Originally Posted by thehellrazor
    Somebody tryed this ??
    I get 750 stable on the core on stock volt and cooling so would be funny to see how far the core will go with a little extra voltage
    wow... 750 is quite high, incredible
    It should fly with 1.5v or something like that... I haven't tried higher than 715 yet... may look into that this week
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  3. #28
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    nice mod
    i may want to get a 7900gto now... too bad us usa folks cant get msi ones, only evga
    for all the people that say their card overheats (thinking this is like most other vid cards) and cant overclock that high, ur wrong
    u run into voltage problems waaay before u run into temp problems
    just wanted to make something clear to some guys that say their card always overheats
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  4. #29
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    Has this VGPU mod been tested / confirmed?

    Thanks!
    Intel IPP, AMD SP, MCP

    Heatware: 51-0-0

  5. #30
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    Quote Originally Posted by Cyba_Mephisto
    Isn´t it better to take a variale resistor?
    Has the VGPU-Mod been tested?
    No way, why would I want a variable resistor ?
    1.95V to RAM is enough for me, and I wouldn't be able to use a variable resistor anyway with the case closed.

  6. #31
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    SF3D: How come you don't have to change both resistors to set it to GTX voltage? Is this because the resistors are used in a series to get the right resistance on the voltage regulator?

  7. #32
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    -derektm-

    That's correct.

    -RPGWiZaRD-

    You should get your money back from Jimm's PC store (If you buy it from there) and buy a new one from other place. There is huge price difference. (Verkkokauppa.com GTO 239€<-->Jimm's GTO 279€)
    You are as good as your samples are!

  8. #33
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    Quote Originally Posted by rpg711
    nice mod
    i may want to get a 7900gto now... too bad us usa folks cant get msi ones, only evga
    for all the people that say their card overheats (thinking this is like most other vid cards) and cant overclock that high, ur wrong
    u run into voltage problems waaay before u run into temp problems
    just wanted to make something clear to some guys that say their card always overheats
    IT GETS TO HOT. PERIOD.

    They can even look into the log file, Rigth click this computer- manage- Event log.

    You fill find a message in there.
    I will have to flash the bios when I geet home to increase Fan speed and then do the Vcore mod
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  9. #34
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    Quote Originally Posted by Nosfer@tu
    IT GETS TO HOT. PERIOD.

    They can even look into the log file, Rigth click this computer- manage- Event log.

    You fill find a message in there.
    I will have to flash the bios when I geet home to increase Fan speed and then do the Vcore mod
    BIOS said my already goes to 100%.
    Has the VGPU-Mod tested?
    Try to polish the cooler with nevrdull.
    It gets my card @ load 7°C lower!

  10. #35
    OCTeamDenmark Founder Nosfer@tu's Avatar
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    Quote Originally Posted by Cyba_Mephisto
    BIOS said my already goes to 100%.
    Has the VGPU-Mod tested?
    Try to polish the cooler with nevrdull.
    It gets my card @ load 7°C lower!
    http://www.nevrdull.com/ Nice.

    is it only polish??

    dident expect that would do anything.
    Former owner of OCTeamDenmark.com
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  11. #36
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    Quote Originally Posted by Nosfer@tu
    http://www.nevrdull.com/ Nice.

    is it only polish??

    dident expect that would do anything.
    Yes. Try it! It helps!

    EDIT: Silver-Paint is drying!!!
    I must wait ~1 hour.
    Please wish me good luck.
    My multimeter shows me an resistance of 5ohm.
    Is that bad?
    Last edited by Cyba_Mephisto; 10-26-2006 at 07:48 AM.

  12. #37
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    That should be ok
    You are as good as your samples are!

  13. #38
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    Quote Originally Posted by SF3D
    That should be ok
    LOL, I just painted again over it.
    !!!

    Now there is a resistance of 1ohm, and silver paint isn&#180;t already dry.
    Will it reach 0ohm when it&#180;s dry?
    Yeah!!!
    0ohm!!!
    I will let it dry a little bit till I&#180;ve finished my homework.
    Last edited by Cyba_Mephisto; 10-26-2006 at 08:49 AM.

  14. #39
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    That's good enough.

    I'm waiting results
    You are as good as your samples are!

  15. #40
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    Quote Originally Posted by SF3D
    That's good enough.

    I'm waiting results
    Is it normal that the circles are connected with the resistors?
    Has the mod been tested?

  16. #41
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    This is basic VID mod. (same mod method with 7900GT, 7800GT/GS, 6800GS)

    In Primarion PX3535DDRG there is 5 VID pins. Controller use VRM10 or AMD Hammer VID code.

    Example (AMD Hammer VID): 1.4V is 0,0,1,1,0 and 1.45V is 0,0,1,0,0.

    I don't have datasheet, so I couldn't discover how to enable different voltage table or something.

    If there is someone who could get this datasheet, please give it to me
    Last edited by SF3D; 10-26-2006 at 09:21 AM.
    You are as good as your samples are!

  17. #42
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    Quote Originally Posted by SF3D
    This is basic VID mod. (same mod method with 7900GT, 7800GT/GS, 6800GS)

    In Primarion PX3535DDRG there is 5 VID pins. All pins to ground (0) is max output voltage (1.45V).

    I don't have datasheet, so I couldn't discover how to enable different voltage table or something.
    So you donīt know if it works?

  18. #43
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    It works for me with wire from other poin to ground. (Same mod--different method). What else you need to know?
    You are as good as your samples are!

  19. #44
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    Thumbs up

    Quote Originally Posted by SF3D
    It works for me with wire from other poin to ground. (Same mod--different method). What else you need to know?
    We need to know if more people applied this mod and saw an improvement in overclocking, the more improvements the merrier :thumbsup:
    lol... This forum requires that you wait 70 seconds between posts. Please try again in 8 seconds.
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    Me: what PSU was that again?
    Friend: Antec 480w
    Me:........

  20. #45
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    Quote Originally Posted by SF3D
    It works for me with wire from other poin to ground. (Same mod--different method). What else you need to know?
    I only want a cind of safety that my card donīt get burned after that.

  21. #46
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    If it doesn't work with silver paint, nothing bad happens. Voltage will not rise in this case.
    You are as good as your samples are!

  22. #47
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    Quote Originally Posted by SF3D
    If it doesn't work with silver paint, nothing bad happens. Voltage will not rise in this case.
    Sux, where to messure V-GPU?
    Where must the other point sit?

  23. #48
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    Voltage reading points are in first page, first post
    You are as good as your samples are!

  24. #49
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    Quote Originally Posted by SF3D
    Voltage reading points are in first page, first post
    Voltage doesn&#180;t change...
    It&#180;s still at 1,4V in 3DMode.
    What&#180;s next?
    Please help SF3D?!?!?!?
    Last edited by Cyba_Mephisto; 10-26-2006 at 10:33 AM.

  25. #50
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