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Thread: ATI 4850/4870 voltmod thread

  1. #1
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    ATI 4850/4870 voltmod thread

    LOL well...the cards are available in some places... if anyone has one, please post up high-res pics of the rear of the card and lets see how far they can be pushed once voltmodded

    The story so far:

    4850:



    VCore:



    VGDDR:



    Thanks to jimmyz and DemonEyez for the pics and extra info

    These mods will invalidate your warranty. I accept no responsibility for mods that go wrong. No-one forces you to try these.
    Last edited by K404; 06-22-2008 at 12:09 PM.
    Quote Originally Posted by T_M View Post
    Not sure i totally follow anything you said, but regardless of that you helped me come up with a very good idea....
    Quote Originally Posted by soundood View Post
    you sigged that?

    why?
    ______

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    wow your on the ball guy.

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    Quote Originally Posted by philbrown23 View Post
    wow your on the ball guy.
    It's more like...



    .. And it's tuesday

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  5. #5
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    Quote Originally Posted by T_M View Post
    Not sure i totally follow anything you said, but regardless of that you helped me come up with a very good idea....
    Quote Originally Posted by soundood View Post
    you sigged that?

    why?
    ______

    Sometimes, it's not your time. Sometimes, you have to make it your time. Sometimes, it can ONLY be your time.

  6. #6
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    #5

    Go buy some

  7. #7
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    here is the chip I will get a shot without the bridge blocking it in a few minutes. and higher res. it is in my rig right now. Stock volts 2d 1.05v 3d loaded 1.2v it will do 700 core with 1.2v.

    [IMG][/IMG]
    QX 9650 5ghz with 1.55v 4.8ghz with 1.5v 24/7 in a VAPOLI V-2000B+ Single stage phase cooling.
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  8. #8
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    Yay! I cannot wait to whack a few of these cards. Hopefully they respond like RV670, 1.1GHz baby!

  9. #9
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    Thankyou jimmyz for allowing me to feel slightly smug about posting this up so early

    pic removed for being wrong

    Please can you measure the voltage at the points marked in green?
    Last edited by K404; 06-13-2008 at 01:15 AM.
    Quote Originally Posted by T_M View Post
    Not sure i totally follow anything you said, but regardless of that you helped me come up with a very good idea....
    Quote Originally Posted by soundood View Post
    you sigged that?

    why?
    ______

    Sometimes, it's not your time. Sometimes, you have to make it your time. Sometimes, it can ONLY be your time.

  10. #10
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    No problem .044v idle 2d .054 loaded 3d
    QX 9650 5ghz with 1.55v 4.8ghz with 1.5v 24/7 in a VAPOLI V-2000B+ Single stage phase cooling.
    DFI LP LT X-38 T2R
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  11. #11
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    LOL well...it aint those points for voltage measurement then! What about the points beside the points I marked (for the top two points- the solder points to the right, for the bottom two, the points underneath them?)
    Quote Originally Posted by T_M View Post
    Not sure i totally follow anything you said, but regardless of that you helped me come up with a very good idea....
    Quote Originally Posted by soundood View Post
    you sigged that?

    why?
    ______

    Sometimes, it's not your time. Sometimes, you have to make it your time. Sometimes, it can ONLY be your time.

  12. #12
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    Here you go.

    [IMG][/IMG]
    QX 9650 5ghz with 1.55v 4.8ghz with 1.5v 24/7 in a VAPOLI V-2000B+ Single stage phase cooling.
    DFI LP LT X-38 T2R
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  13. #13
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    Thanks Il keep 1st post updated. Il be at work rest of day so will be slow on the updates until tonight

    K
    Quote Originally Posted by T_M View Post
    Not sure i totally follow anything you said, but regardless of that you helped me come up with a very good idea....
    Quote Originally Posted by soundood View Post
    you sigged that?

    why?
    ______

    Sometimes, it's not your time. Sometimes, you have to make it your time. Sometimes, it can ONLY be your time.

  14. #14
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    Quote Originally Posted by K404 View Post
    Thanks Il keep 1st post updated. Il be at work rest of day so will be slow on the updates until tonight

    K
    cool, I will get some better pics today, I am only working a half day, I would call in sick but I need the money for VR's and such got alot to do on my review thread to get it up. It would be done by now but I can't resist updating my favorite forum.
    QX 9650 5ghz with 1.55v 4.8ghz with 1.5v 24/7 in a VAPOLI V-2000B+ Single stage phase cooling.
    DFI LP LT X-38 T2R
    2X HD4850's water cooled , volt modded
    Thermaltake 1KW Psu
    4x Seagate 250GB in RAID 0
    8GB crucial ballistix ram

  15. #15
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    The mod is pretty much the same as for HD3k series.
    You were not supposed to see this.

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    Only in XS is there a thread on how to volt-mod a card before the card itself is actually released.

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    Quote Originally Posted by SoulsCollective View Post
    Only in XS is there a thread on how to volt-mod a card before the card itself is actually released.

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    Quote Originally Posted by SoulsCollective View Post
    Only in XS is there a thread on how to volt-mod a card before the card itself is actually released.

    I love you guys.
    My thoughts exactly.

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    Awesome

  20. #20
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    I believe volt mod is done I will be testing saturday. Here is what I found. 100k vr either place to ground.

    [IMG][/IMG]
    QX 9650 5ghz with 1.55v 4.8ghz with 1.5v 24/7 in a VAPOLI V-2000B+ Single stage phase cooling.
    DFI LP LT X-38 T2R
    2X HD4850's water cooled , volt modded
    Thermaltake 1KW Psu
    4x Seagate 250GB in RAID 0
    8GB crucial ballistix ram

  21. #21
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    Does anyone know where I can find the volt mod for the 5850? I've been searching for a while but cant seem to find them! Heh heh
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    Quote Originally Posted by snipper_cr View Post
    Does anyone know where I can find the volt mod for the 5850? I've been searching for a while but cant seem to find them! Heh heh
    Send me the card I'll mod it for you. no charge.
    QX 9650 5ghz with 1.55v 4.8ghz with 1.5v 24/7 in a VAPOLI V-2000B+ Single stage phase cooling.
    DFI LP LT X-38 T2R
    2X HD4850's water cooled , volt modded
    Thermaltake 1KW Psu
    4x Seagate 250GB in RAID 0
    8GB crucial ballistix ram

  23. #23
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    Are the resistances/voltages for the GDDR the same as the 3850 cards as well?

    Will update 1st post with everything once you confirm the VCore mod working

    Thanks for the pics and info
    Quote Originally Posted by T_M View Post
    Not sure i totally follow anything you said, but regardless of that you helped me come up with a very good idea....
    Quote Originally Posted by soundood View Post
    you sigged that?

    why?
    ______

    Sometimes, it's not your time. Sometimes, you have to make it your time. Sometimes, it can ONLY be your time.

  24. #24
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    5 ohm with 100k trimmer?

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    dont bust it mate

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