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Need some help for GA-P35-DS3P vdroop mod

post #1 of 7
11/18/11 at 11:32am
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Hey guys.

Some trouble to get stable q6600 on this board. Currently running at 425x8 @ 1.375 v core(bios) 1.360 windows and 1.344 under load . Some major vdroop here, I can't get it fully stable at this voltage even I know it should hit no problem 450x8 at this voltage, but board just not give it. I've done some search found some threads, but none had illustrated instruction how do it with resistor method. I will later upload hi-res macro image that someone could mark where to begin? rolleyes.gif
Edited by aiboforcen - 11/18/11 at 11:39am
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post #2 of 7
11/18/11 at 2:06pm
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just pencil.. that is all

 

pencil mod

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post #3 of 7
11/22/11 at 10:42am
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Nope, if you tried pencil mod on this board you'll know that it just decrease resistance resulting in even more vdroop.

Sorry for delay, here are pictures:

337
337
(click for bigger image)
Edited by aiboforcen - 11/22/11 at 11:42am
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post #4 of 7
11/22/11 at 2:00pm
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if penciling at the vDROOP pin/resistor = worse droop.. then mod must be through vDIFF [pin#17], which is tied to both vDROOP and FB, by resistor. Decreasing resistance at vDIFF should affect ratio of droop.

 

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post #5 of 7
11/22/11 at 3:32pm
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Quote:
Originally Posted by CL3P20 View Post

if penciling at the vDROOP pin/resistor = worse droop.. then mod must be through vDIFF [pin#17], which is tied to both vDROOP and FB, by resistor. Decreasing resistance at vDIFF should affect ratio of droop.

PDF link

Ok, so what resistor you suggest me use to almost eliminate vdroop? And where should resistor connect when I solder one end on vdiff? Thanks.
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post #6 of 7
11/22/11 at 3:56pm
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Well you would need to identify the vDIFF pin on your pic/mobo and trace it to the resistor its connected to... from there, we can confirm continuity to FB and vDROOP connections.. measure stock resistance levels.

 

 You may be able to pencil the resistor used for vDIFF...Otherwise a 'hard-mod' will be needed, to solder a VR inline to the vDROOP pin to raise resistance.

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post #7 of 7
7/9/12 at 8:06pm
what wattage soldering iron is best for working with motherboards and gpu vmods etc... ?
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