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Fedback needed: Which HD 3xxx cards support software voltage control?

Discussion in 'AMD / ATI' started by W1zzard, Feb 21, 2008.

  1. W1zzard

    W1zzard Administrator Staff Member

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    while researching voltage control on latest ATI cards I found out that a lot of cards do not have ANY software voltage control at all.

    If you have a HD 3xxx or 2600 card, please check the configuration of resistor R636/R639.

    If it is placed HORIZONTALLY your card can support (limited) voltage changes.
    If it is placed VERTICALLY your card can not support any software voltage changes, get the soldering iron out.

    For reference here are two pictures:
    [​IMG] [​IMG]

    Please report back your card's manufacturer, model, PCB number (GPU side near the top edge of the PCB usually) in this thread
     
    _JP_, AsRock, intel igent and 2 others say thanks.
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  2. tigger

    tigger I'm the only one

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    Mines a HIS HD3850 256mb no.109-B34031-00,the resistor is horizontal.I will post a pic a little later.
     
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  3. W1zzard

    W1zzard Administrator Staff Member

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    vertical - his 3850 iceq3 turbox, 8340a2 pcb #
    vertical - gecube 3850 x-turbo III, 109-B34031-00
     
    Last edited: Feb 21, 2008
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  4. largon

    largon

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    horizontal - BBA HD3870 512MB - 109-B33931-00
    horizontal - BBA HD3850 256MB - 109-B34031-00
    horizontal - HIS HD3870 512MB - 109-B33931-00
    horizontal - Sapphire HD3870 512MB - 109-B33931-00
    horizontal - Sapphire HD3870 Atomic 512MB - 109-B33931-00
    horizontal - Sapphire HD3850 256MB - 109-B34031-00
    horizontal - Asus HD3870 512MB - 109-B33931-00
    horizontal - Asus HD3850 512MB - 109-B34031-00
     
    Last edited: Feb 21, 2008
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  5. KainXS

    KainXS

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    I'll check mine in a while but I don't think it supports it off the top of my head

    Edit
    I just checked my 2 powercolor 3850 256mb cards and both are horizontal with the part number 109-B34031-00

    [​IMG]

    so I guess it does support it
     
    Last edited: Feb 21, 2008
  6. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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    [​IMG]

    Horizontal : Visiontek HD3870 512mb - 102B33904-00
     
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  7. erocker

    erocker Super Moderator Staff Member

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    So do I just need to solder or pen a horizontal line then? What is the use of having them connected vertically, or are the resistors just placed differently?
     
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  8. KainXS

    KainXS

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    horizontal, sapphire HD 3870 109-B33931-00

    [​IMG]

    I called a friend of mines who has the gigabyte HD 3870 with the VF-700 and its vertical
     
    Last edited: Feb 21, 2008
  9. trog100

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    what are the ati reference boards out of curiosity..?? horizontal.. ???

    trog
     
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  10. W1zzard

    W1zzard Administrator Staff Member

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    no you can not just solder or pencil it. much more circuitry is missing
     
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  11. Random Murderer

    Random Murderer The Anti-Midas

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    horizontal - Sapphire HD3870 512MB GDDR4, 102-B33904-01-AT
     
    Last edited: Feb 22, 2008
  12. Silverel

    Silverel

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    VisionTek 3850 512mb rev 1.0... 109-B34031-00 B34001-10

    Vertical, definitely. If I had a camera that would work, I'd take a picture.
     
  13. Fitseries3

    Fitseries3 Eleet Hardware Junkie

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    where might it be found on the x2?
     
  14. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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    bump for those who didnt see this earlier today!
     
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  15. KainXS

    KainXS

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    so I'm guessing this info is going into making the next ATITOOL beta
     
  16. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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    I sure hope so*drooling all day about the potential ideas*
     
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  17. DanishDevil

    DanishDevil

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    +1
     
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  18. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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    I looked at the high res. pics that w1zzard put in his review...I didnt see it, however that doesnt mean it isnt there.

    this, is where I was looking ...images at the bottom of the page!
     
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  19. DanishDevil

    DanishDevil

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    I looked too! I couldn't find any chips similar to the ones soldered onto the PCB with multiple pins on each side, except maybe to the upper right of the GPUs, but the numbers are obviously different.
     
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  20. largon

    largon

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    HD3870X2 does not have this resistor as the phase controllers are totally different (uPI uP6201 vs. Volterra 1165MF).
     
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  21. W1zzard

    W1zzard Administrator Staff Member

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    yep, info in this thread doesnt apply to 3870 x2
     
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  22. barr3l rid3r New Member

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    Gigabyte HD3870 512MB DDR3 Ultra Durable GV-RX387512H (Horizontal)

    [​IMG]
     
  23. alexp999

    alexp999 Staff

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    Hi, could someone please post a picture of the graphics card as a whole with a circle around the bit we are looking at, I think I have found it, but just want to check the orientation and position, if I am looking in the right place from the right direction, there is a damn lot of circuitry ontop of these cards,

    Thanks.
     
  24. Silverel

    Silverel

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    That'd be the first post. R636/R639 is actually one resistor but two different positions it can be in. On my card it was on the end opposite the DVI ports. You'll be looking on the back. It's tricky to find, but just look for the large (relatively) black chip and try to spot those two numbers.

    When looking at it, you want the PCI slot to be pointing down, and the DVI ports to be to your right. AFAIK
     
    alexp999 says thanks.
  25. KainXS

    KainXS

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    I REALLY want software voltage control so

    BUMP

    somebody please post with info on your cards
     

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