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HD 4870 softmod

post #1 of 23
Thread Starter 
Does anyone knows a method that works currently ?

I searched around and bumped on evga voltage tuner but it seems to need a patch of some sort to work, which I wasn't able to find out a reliable link to.

And MSI Afterburner doesn't work.

PS: It's the PowerColor HD 4870 PCS+
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post #2 of 23
Radeon Bios Editor.

http://www.techpowerup.com/rbe/
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post #3 of 23
Thread Starter 
I really didn't want to go that way, is it the only option ?
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post #4 of 23
RBE as mentioned above. I had 2 4870 and didn't find any other way to mod their voltages. You could try to find Sapphire Trixx if it works, but i doubt it.
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post #5 of 23
it was the only easy way of getting my 4850 over 700MHz on Core. i still can't tune the voltage with MSI afterburner though, but haven't tried anything more as i already am pretty satisfied with i got actually. maybe in a few more months i'll dig into it. Other than that you have to try pencil mod.
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post #6 of 23
Thread Starter 
RBE it is then, do you guys have some kind of guide on how to use it ?

Don't want to brick my 4870, from what I remember of this bios business if you flash the wrong size it's game over.
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post #7 of 23
I don't know about that, but an advice on the vmodding - monitor your temps All the time! 4870 is a hot hot card, and extra volts will make it hotter. At 100C you should tune down.
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post #8 of 23
Thread Starter 
Yea, I don't to push it too much, its at 1.263 now, I'm thinking 1.3 at most.
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post #9 of 23

you'll just extract your current BIOS and modify it a little. You'll need winflash too.
Extract the BIOS and change the voltage numbers for every profile.

see this:


and good luck

Check on temps like ronnin426850 said, and you'll probably be fine.
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post #10 of 23
From what i see in this thread you certainly dont have enough information about your card/bios or what or how to flash.

Please take some advice and do some research and think about the risks involved here as its clear your a little in the dark here,search a little for some info on your exact cad model.

Its very possible that your card does not have any hardware onboard for voltage change and if this is the case then trying to change voltage via bios will not be effective.

A good start would be a link to the exact model/board of your gpu.
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