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Thread: 8800GT voltage mods

  1. #226
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    hmmm 1.3 that's bad news
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  2. #227
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    Maximum Volt Mod

  3. #228
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    just gotta see now whether that OVP point that was pointed out earlier in the modding thread will work....just need to get someone to test this out now
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  4. #229
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    Is it possible to do the OVP mod by penciling the resistor? If so I'd be willing to play guinea pig.
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  5. #230
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    Quote Originally Posted by Mysterfix View Post
    Is it possible to do the OVP mod by penciling the resistor? If so I'd be willing to play guinea pig.
    Does the OVP play any role in BIOS max voltage?

  6. #231
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    i don't think bios can select that much voltage
    '
    from what people are reporting max 1.2v
    so you have to hard mod but if only 1.3v it is not worth it unless you are going to push it on DICE
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  7. #232
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    Quote Originally Posted by pinto View Post
    VGPU:1.3v wtercooled:

    3DMark Score 17231 3DMarks
    SM 2.0 Score 7218 Marks
    SM 3.0 Score 6777 Marks
    CPU Score 6352 Marks

    that is really nice for such a cheap card

  8. #233
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    Just ordered my Palit 3 phase 8800GT! Will be here in 3 days.

    http://www.xpcgear.com/be880gtt3.html

    Hurry up, they still have stock!
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  9. #234
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    Quote Originally Posted by Renegade5399 View Post
    Just ordered my Palit 3 phase 8800GT! Will be here in 3 days.

    http://www.xpcgear.com/be880gtt3.html

    Hurry up, they still have stock!
    i was going to get one from them, but they have some really bad reviews at resellerratings.com

    ..also i read that one guy ordered this card from them and got the regular edition with refference cooler and probably without the 3phase power

  10. #235
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    Quote Originally Posted by Renegade5399 View Post
    Just ordered my Palit 3 phase 8800GT! Will be here in 3 days.

    http://www.xpcgear.com/be880gtt3.html

    Hurry up, they still have stock!
    It doesn't say phase 3 anywhere on it and the picture even says "Actual item may differ from image shown"

    The part number doesn't come up on google, and the reference name is like this one:

    http://www.hardwareschotte.de/hardwa...GT+NE8800TT352

    Their main webpage doesn't list a product or part number either :/

    Be wary...

    Quote Originally Posted by winbond View Post
    i was going to get one from them, but they have some really bad reviews at resellerratings.com

    ..also i read that one guy ordered this card from them and got the regular edition with refference cooler and probably without the 3phase power
    Not a good sign.
    Last edited by Hazaro; 11-12-2007 at 02:33 PM.

  11. #236
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    okay doing the mod. now. Freaked out this is my 1st one. What do I do 1st/

    I have 1kohm vr ready to go and wire from a fan. multi meter =/ good rosin core 2.5 oz .032 diameter solder. HELP

    using this as a guide
    Last edited by trans am; 11-14-2007 at 07:29 AM.

  12. #237
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    Ok Mod BIOS and overclock testing again:

    This is Max shaders i tried the next step but it is 2000MHz a big jump, not max core yet, vRAM didnt play much but at least it didnt get worst that before the mod.

  13. #238
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    Quote Originally Posted by metro.cl View Post
    Ok Mod BIOS and overclock testing again:

    This is Max shaders i tried the next step but it is 2000MHz a big jump, not max core yet, vRAM didnt play much but at least it didnt get worst that before the mod.
    Okay soldiering is done. Now what? do i measure something? plug it in? turn pot? HELP MAN!


    okay if I measure on the points I just soldered. (see image) I get 014.1 ohms does this help?
    Last edited by trans am; 11-12-2007 at 03:24 PM.

  14. #239
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    Quote Originally Posted by trans am View Post
    okay doing the mod. now. Freaked out this is my 1st one. What do I do 1st/

    I have 20k vr ready to go and wire from a fan. multi meter =/ good rosin core 2.5 oz .032 diameter solder. HELP

    using this as a guide
    You're going to need a 500Ohm or 1kOhm VR for the vGPU. Where are you using the 20k?

  15. #240
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    Quote Originally Posted by metro.cl View Post
    Ok Mod BIOS and overclock testing again:

    This is Max shaders i tried the next step but it is 2000MHz a big jump, not max core yet, vRAM didnt play much but at least it didnt get worst that before the mod.
    I'm confused? Did you mod the BIOS to get extra volts? Or did you use a VR?

  16. #241
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    Quote Originally Posted by Hazaro View Post
    Does the OVP play any role in BIOS max voltage?
    I have no idea. I measured the OVP resistor and got 3.22k So I penciled it down to 2.77k and it seems to have done the trick!

    I'm now able to set vGPU to 1.35v which is 1.4v under load! I played a 1/2hr. of CoD4 without any issues. I used to get a black screen after less than a minute.

    It would be nice if one of the experts could tell me what the proper resistance should be for the OVP mod on GT cards.
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  17. #242
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    Quote Originally Posted by Mysterfix View Post
    I have no idea. I measured the OVP resistor and got 3.22k So I penciled it down to 2.77k and it seems to have done the trick!

    I'm now able to set vGPU to 1.35v which is 1.4v under load! I played a 1/2hr. of CoD4 without any issues. I used to get a black screen after less than a minute.

    It would be nice if one of the experts could tell me what the proper resistance should be for the OVP mod on GT cards.
    How hot is it getting?!

  18. #243
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    Quote Originally Posted by trans am View Post
    Okay soldiering is done. Now what? do i measure something? plug it in? turn pot? HELP MAN!


    okay if I measure on the points I just soldered. (see image) I get 014.1 ohms does this help?
    If you soldered you need to lower the resistance to get more volts, turn a little and check vGPU with a tester, and then try OC.

    Quote Originally Posted by jason4207 View Post
    I'm confused? Did you mod the BIOS to get extra volts? Or did you use a VR?
    only bios so far

  19. #244
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    Quote Originally Posted by Hazaro View Post
    How hot is it getting?!
    Not hot at all really, went up 2ºc on the core (40ºc-42ºc)

    Mosfets and vregs are in hte mid to upper 40's sinked without a fan and mid to upper 30's with a fan.
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  20. #245
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    Quote Originally Posted by metro.cl View Post

    only bios so far
    How did you change vRAM?

  21. #246
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    Quote Originally Posted by jason4207 View Post
    How did you change vRAM?
    i didnt there is a pencil mod for that and it is quite easy, but this vRAM doesnt seem to respond good to volts

  22. #247
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    Quote Originally Posted by metro.cl View Post
    i didnt there is a pencil mod for that and it is quite easy, but this vRAM doesnt seem to respond good to volts
    Well I am hoping my RAM will fare better w/ a little extra volts. I was only getting 929 stable earlier. Now it seems 951 is stable...gonna try a little higher. I know 972 isn't stable. I don't understand why doing the BIOS mod would affect the maximum RAM clocks, but I'm not complaining. Maybe they just needed to break in?

    Yes, I did the BIOS volt mod. I just want to thank you guys for the valuable info, and thanks to Mavke for his hard work!

    I was only getting 712/1674/929 (pretty low) stable earlier on my vanilla GT. I actually got a card w/ stock 600/1500/900 clocks despite the fact a lot of folks got SC factory clocks on their vanilla GT's. (got it through eVGA's step-up...320GTS-->GT)

    Now I'm getting 741/1728/951 artifact free under ATI Tool...so far. Temps are 70 on the stock cooler w/ 100% fan.

    Next step is to get the HR03GT (when it's released), and a good fan on there. Then some VRs will help me get in the 800/2000's...I hope!

    edit: I may just leave my RAM alone if it'll run at 950. No use to go higher until I understand better this rumor I hear of the RAM dieing if you OC it to 1000.
    Last edited by jason4207; 11-13-2007 at 05:21 AM.

  23. #248
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    Quote Originally Posted by Mysterfix View Post
    I have no idea. I measured the OVP resistor and got 3.22k So I penciled it down to 2.77k and it seems to have done the trick!

    I'm now able to set vGPU to 1.35v which is 1.4v under load! I played a 1/2hr. of CoD4 without any issues. I used to get a black screen after less than a minute.

    It would be nice if one of the experts could tell me what the proper resistance should be for the OVP mod on GT cards.
    Which one is the OVP resistor?
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  24. #249
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    so is the bios mod working for you guys????? if so can you share a screen shot of the bios settings....thanks.

  25. #250
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    Quote Originally Posted by GAR View Post
    so is the bios mod working for you guys????? if so can you share a screen shot of the bios settings....thanks.
    Go to bios section you will find it Yes, you can increase voltage by 0.05V from bios and it really works.
    ...

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