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Thread: 680i (eVGA, XFX, BFG...) A1 / D00 Rev. VCORE AND VDROP DONE!

  1. #1
    symphy
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    680i (eVGA, XFX, BFG...) A1 / D00 Rev. VCORE AND VDROP DONE!

    Hello there,

    I didn't find those mods on the net, so... i figured them out together with a friend.

    Tested by me.



    Vcore Readout is at every solid state capacitor around the CPU socket (I took the + contact).

    It was not too difficult, but PLEASE community, PLEASE SHARE what you have! A lot of easy mods are missing here even i know that they are done!
    Last edited by symphy; 08-11-2007 at 05:42 AM.

  2. #2
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    Thanks to share it, it was really needed

    Bye
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  3. #3
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    100kohms for vdroop, you could prob get 80kohms with a good B pencil so should work no?

  4. #4
    Xtreme n00berclocker
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    Vcore mod works. I didnt get a chance to test the vdroop. Thanks
    Quote Originally Posted by 3oh6
    damn you guys...am i in a three way and didn't know it again
    Quote Originally Posted by Brian y.
    Im exclusively benching ECS from this point forward

  5. #5
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    Damn Vdrop and vdroop are now gone with #2 pencil. Thank you OP very much! 1.50 set in bios, 1.50 in windows and 1.51 under full load small fft!
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  6. #6
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    Quote Originally Posted by pumbertot View Post
    100kohms for vdroop, you could prob get 80kohms with a good B pencil so should work no?
    Works great with #2 pencil!!
    Gigabyte Z68X UD7
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  7. #7
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    OP you should start a thread in intel section with this same topic... TONS of people need this info. If others were like me, they don't even know this forum section exists. I found it by accident. Thanks again for the valuable info!
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  8. #8
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    Can someone elaborate where you draw the mod? I've used a 2B on a video card before. Where do you draw the lines?
    <----- REST IN PEACE, KIT. 1993-2007.


  9. #9
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    picture in first post shade between the 2 red x's
    Gigabyte Z68X UD7
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  10. #10
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    Quote Originally Posted by uclajd View Post
    Can someone elaborate where you draw the mod? I've used a 2B on a video card before. Where do you draw the lines?
    Unless I'm understanding incorrectly, you can use the blue to blue in a straight line of shading or the red to red, either should work the same.

    Try 3 passes pressing light-to-medium and then check your Windows voltage vs. BIOS setting and also under load.

    If still drooping, add 1 pass and check again.

    Repeat as necessary.

  11. #11
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    thanks heaps the mod works great

    Q6600 3.5GHz@1.3815v set in bios >>>> 1.368v IDLE/LOAD (previously 1.344v IDLE > 1.294v load LOL
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  12. #12
    Turkey Man
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    Thanks for doing the hard work
    Once i've soldered mine up i'll post a clearer picture for people.

  13. #13
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    Great job! Ive been looking for a simple vmod for the last month!!! I get shocking vdroop underload on my EVGA. Gonna give this a shot
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  14. #14
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    Thank you so much..!!
    Quote Originally Posted by jimmyz View Post
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  15. #15
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    Any update on this? Can someone post a clearer picture for where I should be penciling in? #2 or B pencil?

  16. #16
    Turkey Man
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    Just hard modded vcore, vdroop, vdimm and all working well.

    Reproduced picture for clarity - all credit goes to symphy


  17. #17
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    Many thanks for the vdroop mod. Board use to droop 0.075 - 0.08 under load! Now it's the same idle or load

    I'm having trouble fixing the vdrop in Windows (Still around 0.02). Is the vcore mod supposed to fix this, or am I missing something?...
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  18. #18
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    With the clearer pictures, it appears that it's a resistor?? So how would one draw a line over a resistor with a pencil? Can someone just draw a "dot dot dot" line across the points that needs to be done over with a pencil? I feel like I'm missing something... drawing over resistor seems a bit confusing to me.

  19. #19
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    seriously, just draw a path from the red spots. think of the red spots as metal and you want to connect them together with your pencil's graphite. just draw away and check your voltages

  20. #20
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  21. #21
    Turkey Man
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    Its already explained, but yeah pencil mod means just draw across the top of the resister along it's length from metal tip to metal tip. The amount of graphite you deposit (thickness and dark-ness of your pencilling) will vary the amount of resistance

  22. #22
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    Can someone post a pic of the finished pencil mod please. *runs off to get 2b pencil*

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  23. #23
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    My pencil mod is not showing up very much. But working very well.
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  24. #24
    Xtreme n00berclocker
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    Quote Originally Posted by Bei Fei View Post
    Can someone post a pic of the finished pencil mod please. *runs off to get 2b pencil*
    It doesnt really show up but you should check it with a multimeter then check your voltages with one once your done.
    Quote Originally Posted by 3oh6
    damn you guys...am i in a three way and didn't know it again
    Quote Originally Posted by Brian y.
    Im exclusively benching ECS from this point forward

  25. #25
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    vdroop mod done.

    before:
    1.40 in bios = 1.35 in windows idle = 1.30 under max load
    1.45 in bios = 1.40 in windows idle = 1.35 under max load
    1.50 in bios = 1.45 in windows idle = 1.40 under max load (had to use this for 3.6)
    1.55 in bios = 1.50 in windows idle = 1.45 under max load

    after:
    1.40 in bios = 1.38 in windows idle = 1.40 under max load (now stable at 3.6)
    1.45 in bios = 1.43 in windows idle = 1.45 under max load
    1.50 in bios = 1.48 in windows idle = 1.50 under max load
    1.55 in bios = 1.54 in windows idle = 1.55 under max load


    Simply fantastic. Now my cpu is stable with 1.40 set in bios, which is 1.38 in windows instead of 1.45!!! everyone with an A1 board should be doing this mod. it gives you a slight reverse vdroop which is excellent. I had to pencil the resistor about 6-7 times before I got the perfect voltages. On the last pass I put too much lead, and I was getting +0.1 under load compared to bios. So I shut down, stuck my finger onto the resistor and wiped a bit of graphite off. Now load voltage is exactly the same as bios setting. This is pretty much one of the biggest flaws that the 680i reference board has, and you can fix it with a pencil. ZOMG im so happy, thank you OP.

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