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Attempting the "Pencil" mod on a Non reference Gigabyte GV-R5870OC-1GD and looking for help via these images

post #1 of 5
Thread Starter 



















I've done alot of research as to which resistor to apply the pencil mod to, but I have been unable to find said resistor regardless of my attempts.

All I can find are some very crude MS Paint drawings and diagrams on other non reference cards that have un matching resistor numbers to mine.

If anyone can help me with my pencil mod, I would greatly appreciate it.

Perhaps just a circle on the resistor that needs the graphite applied would be great.

Thanks for any and all help, and I can upload more pictures as needed of course.


By the way, the card is running on an Antec Kuhler 620 and runs at 50C @ full load for hours @ 1.163v so I believe this mod, as most said should enable me to push the card to 1.2ghz or higher considering it will do close to 1ghz stock already.

There is NO software volt modding for this card, and I have attempted to flash to the Gigabyte SOC 5870 BIOS to no avail (of which I used to own that card, and wish I never would've sold it).


Yes I do own MUCH faster cards, but I found out about the pencil modding of the non reference/non volt-moddable 5870/5850/5830 cards, and couldn't help but give it a shot, since its already on water.


Thanks for ANY help guys.

Take care and Best Regards thumb.gif
Edited by m3t4lh34d - 5/25/13 at 12:32pm
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post #2 of 5
Thread Starter 
I know this stuff was active 2 years ago, but seriously, NOONE is into this anymore?
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post #3 of 5
Not too sure about that controller, looks like it needs VID modding for full control, although it should be able to give some extra voltage from pin 18.
Try looking for continuity from pin 18 to a nearby resistor, shading it should give some kind of voltage bump. You'll need to measure vgpu from a cap on VRM output to see any changes.
    
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post #4 of 5
Thread Starter 
Thanks for the tip. I've just been reading about a particular resistor that can be shaded for a vgpu boost up to around 1.30-1.35 but the numbers are different on the resistors for each brand, so it becomes hard for a vmod noob like myself which is why i posted pictures.

If anyone can help me in that regard, let me know.

WHen you said pin 18 where would that be located?
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post #5 of 5
Thread Starter 
Btw if you open in new tab they're some high res shots (18MP)
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  • Attempting the "Pencil" mod on a Non reference Gigabyte GV-R5870OC-1GD and looking for help via these images
Overclock.net › Forums › Graphics Cards › AMD/ATI › Attempting the "Pencil" mod on a Non reference Gigabyte GV-R5870OC-1GD and looking for help via these images