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Would appreciate help in finding / editing the voltage offset in the RX480 Bios - Page 12

post #111 of 174
Quote:
Originally Posted by doktor83 View Post

Well for start it would be nice if you upload the original bios, cause this one has a bad crc already.
So i don't know what did you alter in it already.
Sorry, that bios wasn't mine, I get it from my friend. (he took it from internet I guess)
Here is the original bios:
elpida.zip 110k .zip file

I see that space for improvement is bigger here..
What I would like to achieve is.. timing such fast as possible at ~2030Mhz (more or less) with low voltages.. 930mv is maximum, I heard some people running this card @850mV..
I would like to use this card under linux with power-stage-based adjusement, so I have an idea to hardcode voltages in PBE.
F.e (effective) p7 - 930mV
p6- 910mV., p5 - 900mV .. p1 - 850mV.
So if using vddci offsets -100mV I should set it 100mV higher?
Or cause I don't exactly understand what are you talking about above if it can be achieved another way I will be fine.
post #112 of 174
@chris89

HI Chris89,can you make me a bios with this spec?

VDDC max voltage 1.40-1.45v

VDDCI max voltage 1150mv

i try to run my Sapphire to extreme limit,after i will post my oc result,thank you very much!
Rx480nitro8gb.zip 110k .zip file
Edited by EMYHC - 5/4/17 at 8:37am
post #113 of 174
@doktor83

I saw that your SRBPolaris detects if there are offsets already present in the bios. So i tried adding a offset to my ref 470 and the result was this


Does this mean i succeded in adding the offset? And can your editor also detect other offsets too, from cards that do not have the IR3567B voltage control chip ?

Anyways thanks for the Editor!

Also Thanks to @gupsterg for this awsome tutorial.
post #114 of 174
When it shows the dropdown it means that it found the necessary hex values on the right place in the bios. Will it work, it depends if you corrected all the table lengths smile.gif

Only IR3567B works for now.
post #115 of 174
Yeah i know that. Havent tested it. I also didn make sure it it is the IR3567B on my card. So i gotta do that. I report back once i tested XD

Edit: I just tested it and it works flawless biggrin.gif . Very nice tool indeed
Edited by seitrox - 5/6/17 at 1:39pm
post #116 of 174
Thanks smile.gif
Unfortunately it only works good when the card has a vddc offset. When no offset, it tries to do some magic in the PP table but that rarely works frown.gif
post #117 of 174
Hi,

can anybody help me with undervolting a Sapphire RX570 Pulse 4gb (Elpida)?
I would like 900mv
Tried a few things but nothing is working.

Thanks

pulsemod7.zip 108k .zip file
post #118 of 174
what have you tried ?
post #119 of 174
Hi, I have tried msi ab, sapphire trixx, wattool, and srb editor but whenever I try to drop the voltage I get a blue screen.
post #120 of 174
OK, now before trying to make changes in the bios itself with SRBPolaris, first clean stuff with DDU, and remove AB, trixx and so on.
I heard that people can only control fan on these new cards with AB biggrin.gif
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