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Overclock.net - Overclocking.net > Volt Mods > General Volt Mods > Graphics Cards Volt Mods | |
4850 pencil volt mod
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LinkBack | Thread Tools |
08-08-09
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#1 (permalink) | |||||||||||||
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New to Overclock.net
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4850 pencil volt mod
abit of a noob question, but iv been looking in to pencil moding my sapphire 4850, i found a picture on how to do it but all i have is a standard class room pencil, iv tryed using it but it doesn't seem to be getting any extra volts on the vgpu, what kind of pencil do i need, thanks.
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08-08-09
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#2 (permalink) | |||||||||||
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Grumpy
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graphite/#2, if you have a multimeter, you can use your probes to test whether or not it is conductive.
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08-08-09
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#3 (permalink) | |||||||||||||||
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4.0 GHz
 
Join Date: Dec 2008
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Yeah, a 2b pencil is what I used.
Not too soft, not too hard.
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08-08-09
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#4 (permalink) | |||||||||||||
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New to Overclock.net
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oh cool so it is a normal pencil then, erm i think iv got the right one do i need to really cover it, or will just a simple line or graphite do ? thanks
Edit: joemaniaci, how do i test the pencil, iv got a multi meter infront of me
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08-08-09
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#5 (permalink) | |||||||||||||
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4.0 GHz
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Draw a thick line on a piece of paper. Measure the two ends of the line and check for resistance. Should be relatively low for good conductivity.
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08-08-09
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#6 (permalink) | |||||||||||||
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New to Overclock.net
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ok i tryed that with 2 different pencils dont seem to be getting anything, what does the resistance have to be set to, thanks
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08-08-09
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#7 (permalink) | |||||||||||||
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New to Overclock.net
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Try using something like the tip of a screwdriver to scuff up the solder. On my 4850s I had to scrape them before I could get the pencil mod working, I think it had a slight protective coding on it or something. Make sure though that you use a multimeter to measure voltage because a little too much lead can kill your board.
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08-08-09
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#8 (permalink) | |||||||||||||
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New to Overclock.net
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hmm ok cool ill have a look, its jsut reli hard to actually see the metal thing, i cant tell if its got pencil on or not lol, thanks everyone for ur help, ill post back to see how it goes
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08-08-09
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#9 (permalink) | |||||||||||||
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New to Overclock.net
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what resistance do i need to set it at while trying to find the voltage for the Vgpu, thanks
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08-09-09
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#10 (permalink) | |||||||||||||
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New to Overclock.net
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i recall it being around 1k stock and 950 modified but I am not 100% on that.
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