voltage mods

T

towly

New Member
what exactly is a voltage mod for a vid card? Does upping the voltage on a vid card also help get attain a higher overclock or does it not affect oc'ing at all.
 
I'm pretty sure a voltage mod is just to increase the voltage. Yes I do believe it's done in certain cases to provide more power for higher clock speeds as well as other reasons such as in some cases when extra pipes are unlocked and more power is needed.
 
do you know how much graphite to put on the transistor?
Click to expand...

No sorry I don't know how to perform such a mod. I'm sure though if you goggle for the answer you'll find some nice tutorials.
 
The amount of graphite depends on how much resistance you need/don't need. This is specific to each individual type of mod, so no one can tell you unless you describe the card, the mod you are doing, and which transistor you are working with.

There are also other "cleaner/more permanent" ways to do a vid card mod (or most any mod for that matter.) You can do a "trace" type mod where you jsut use a piece of metal and solder it on the board. This is more permanent and sometimes can be more effective as graphite tends to wear off.

Be sure you know EXACTLY what you are doing befroe you attempt a volt mod. You also might need to be able to lose a vid card, bcuz' some cards jsut dont take nicely to extra voltage/heat and will die on you after a few days of succesful running. It's a fishy business.
 
I have a good enough cooler to keep the card cool; would that help with the problem of heat or is it that some cards just cant take the extra voltage and will die?
 
It will help, but some cards DO jsut up and die after volt mods. It's not very common, and usually is caused by a slight error by the modder. maybe he added just a TAD too much voltage, and after a few days of running at that voltage, it jsut gives.

i really dont suggest modding hardware that you can't afford to replace, it's not a good idea. if money is no problem, experiment away. just make sure you are clear on the instructions, and there shouldn't be much room for error. just remember it's kind of like overclocking, one card might take well to the mods, and another card might hate them and artifact.
 
Ill try the pencil method and see how that goes. From what I've seen for every ten ohm's of resistance that are decreased the voltage increases by .02. Right now I have the card at 580mhz at the core and I just want to get it to like 600ish, Im guessing that with a .04v increase that should do the trick, or would I need to up the voltage by .1v to get that extra 20mhz?
 
hmm...

i would assume .04-.06v would do for 20MHz, but seeing as i have never volt modded a 6600GT i'm not sure lol. i work with my chipset mostly, and went from 1.7v to 2.2v :P needless to say it overheated adn now i don't overclock anymore. (on this machine anyways...i will never stop overclocking in general :) )
 
I was reading through some threads on another forum that I got as a google result and they were saying something about changing the hexadecimal values in the bios flash file to raise the voltage, but I really couldnt follow due to the shitty way people quoted each other and I couldnt understand half the shit people said (due to their shitty english).

http://www.xtremesystems.org/forums/archive/index.php/t-48982.html

theres the link.
 
Yes, you can mod the BIOS and then flash it to the card, jsut like a motherboard. However i don't know how to mod a vid card BIOS, and i've never flashed a vid crd BIOS either. if you can trust someone who knows how, ask them if they can mod your vid card's BIOS and he can show you how to flash it. but this is a very permanent mod, and you'll have to flash back to original BIOS if you don't want it as high anymore, you can't just "remove" it like a trace/pencil mod.
 
I think I'll pencil mod the card first and see where the card runs best at, and then either flash it to that voltage or do a trace mod.
 
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