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ATI Hd 7950/7970 bios mod thread - Page 2

post #11 of 1284
Haha, one of my cards is 73.1% and the other identical card is 61.8%?!

The 73.1% card is running in a 16x-1x riser ribbon and I can only assume because of this it has automagically lowered it's voltage to 1.169 from 1.250?

The card that is in the 16x slot is locked on 1.250v and has 61.8% asic quality.

I checked and the bios is exactly the same as posted by Atomfix.
post #12 of 1284
Thread Starter 
Quote:
Originally Posted by mousebat View Post

Haha, one of my cards is 73.1% and the other identical card is 61.8%?!

The 73.1% card is running in a 16x-1x riser ribbon and I can only assume because of this it has automagically lowered it's voltage to 1.169 from 1.250?

The card that is in the 16x slot is locked on 1.250v and has 61.8% asic quality.

I checked and the bios is exactly the same as posted by Atomfix.
What max voltage did you want? Will add the next morning when im off work. I don't think its the same since his is locked at 1.113v .
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post #13 of 1284
Ah, I'll have to extract my bios and put it up. Much appreciated.

I'd love to know what values to look for in the hex smile.gif
post #14 of 1284
Congratulations! You have done it! I'm able to pass the 1.13V limit on my XFX 7950!!!

I'm at 1.14V and able to go right up to 1.225V!!!

EDIT, To all other user XFX users, my BIOS will not work with your XFX 7950, each BIOS has it's own code to power the VRMs.... or something like that, you will end up bricking your card, Each XFX BIOS has to be modified.

795A-TDJC Now running @ 1.225V, Was running a quick test in furmark with 100% fan, and the load temp easily hits 70C+

Good job on the work! Hope to hear from you tomorrow about the memory voltage biggrin.gif
Edited by Atomfix - 6/3/13 at 2:26pm
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post #15 of 1284
Ok here's my bios mod on atomfix's , based on what I did on the fy1 fx1 for gigabyte locked cards. You need to use trixx... and your default voltage will be low now 990 according to this bios that atomfix posted. Stock is 1.13, not 1.25 as it says, dont know why you got that?

What I do is set all the asic states to something really low, except for the last one, so 01 02 02 02 etc... then keep ff 03 for the lowest voltage. Somehow that worked on the gigabyte bioses!

Atomfix, how did you edit the vrm's? These bioses have 00 00 for the vrm register. In stock you get a value like 97 00 for example

Try it out and let me know how it goes. If this trick works for dd, wow.. awesome! xfx795DD-robnitroMOD.zip 81k .zip file
post #16 of 1284
Is there a trick to get trixx to adjust voltage on non reference PCBs? I have 3 lightnings and can't seem to get trixx to adjust voltage.

Reason I ask is because I want to use 50% pt on the lightning's stock bios as well as get over 1.35v. I have used artmoney with ab to achieve whatever voltage I want, but w.o 50% pt, I don't think it is doing me much good.

If I could use ab for pure voltage and sapphire/CCC for pt% and have it work together, that would be king lol.

I have found the pt hex in the bios but from what it sounds like, ab is locked down to what it wants as limits.
     
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post #17 of 1284
Quote:
Originally Posted by robnitro View Post

Ok here's my bios mod on atomfix's , based on what I did on the fy1 fx1 for gigabyte locked cards. You need to use trixx... and your default voltage will be low now 990 according to this bios that atomfix posted. Stock is 1.13, not 1.25 as it says, dont know why you got that?

What I do is set all the asic states to something really low, except for the last one, so 01 02 02 02 etc... then keep ff 03 for the lowest voltage. Somehow that worked on the gigabyte bioses!

Atomfix, how did you edit the vrm's? These bioses have 00 00 for the vrm register. In stock you get a value like 97 00 for example

Try it out and let me know how it goes. If this trick works for dd, wow.. awesome! xfx795DD-robnitroMOD.zip 81k .zip file

Because if I use any other 795A-TDJC BIOS's on my XFX 7950, it will brick my card, I've tried every single BIOS on TechPowerUP, and it all seems to brick my card, unless I flash the one that came with my GPU.

If it's not the VRM Registers, it must be something else that's hard coded on the PCB??

The stock voltage was 1.030V and I was able to overvolt it to 1.130V in Trixx, and it was locked at that voltage, until today, I used a edited BIOS that Kahboom provided me (Which was the BIOS from my card) , and I'm now able to go as high as 1.225V, I can go even further though! I just need Kahboom to edit the voltages even higher, but I'm afraid that the VRM's might blow, I believe it only uses 4 or 5 power phases for the GPU.

I still need the memory voltage changed because I can't get past 1350MHz without crashing or getting any artifacts.

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post #18 of 1284
Thread Starter 
Quote:
Originally Posted by robnitro View Post

Ok here's my bios mod on atomfix's , based on what I did on the fy1 fx1 for gigabyte locked cards. You need to use trixx... and your default voltage will be low now 990 according to this bios that atomfix posted. Stock is 1.13, not 1.25 as it says, dont know why you got that?

What I do is set all the asic states to something really low, except for the last one, so 01 02 02 02 etc... then keep ff 03 for the lowest voltage. Somehow that worked on the gigabyte bioses!

Atomfix, how did you edit the vrm's? These bioses have 00 00 for the vrm register. In stock you get a value like 97 00 for example

Try it out and let me know how it goes. If this trick works for dd, wow.. awesome! xfx795DD-robnitroMOD.zip 81k .zip file
you have to correct an edited checksum too not brick these cards on the xfx. Voltage can be raised to max on value can not be changed near the bottom of the hex in another section after burner finds it thats way it does not work with the mod but its in another section i did not list, or show a picture of allowing a cap in the Asic if you will the setting before last i set near his asic value and raised to 1.150. So his card would run between that and the previous setting. Changed last setting to 1.255v which is the new limit. Since the power phase is weak i did not raise fully. Unlocked power tune to 50%. He has run up to 1.225v but did not go higher due to heat. To avoid conflict correct checksum value back to stock value and it works 100% of the time. I will revisit his bios later on and perform more tweaks i havw yet to list, just havent had the time. As far as vrm in his bios its just not there most likely due to the type of power phase used.

Quote:
Originally Posted by jomama22 View Post

Is there a trick to get trixx to adjust voltage on non reference PCBs? I have 3 lightnings and can't seem to get trixx to adjust voltage.

Reason I ask is because I want to use 50% pt on the lightning's stock bios as well as get over 1.35v. I have used artmoney with ab to achieve whatever voltage I want, but w.o 50% pt, I don't think it is doing me much good.

If I could use ab for pure voltage and sapphire/CCC for pt% and have it work together, that would be king lol.

I have found the pt hex in the bios but from what it sounds like, ab is locked down to what it wants as limits.
post your bios and i will take a look. Yes after burner is locked. I have been looking for and uncapped lightning bios the ln2 one but cant find it. I wanted to see how they prevented the card from powering down in the sleep state for the power phases from reviews i have read, this would be nice to see how it would effect a normal card.
Quote:
Originally Posted by Atomfix View Post

Because if I use any other 795A-TDJC BIOS's on my XFX 7950, it will brick my card, I've tried every single BIOS on TechPowerUP, and it all seems to brick my card, unless I flash the one that came with my GPU.

If it's not the VRM Registers, it must be something else that's hard coded on the PCB??

The stock voltage was 1.030V and I was able to overvolt it to 1.130V in Trixx, and it was locked at that voltage, until today, I used a edited BIOS that Kahboom provided me (Which was the BIOS from my card) , and I'm now able to go as high as 1.225V, I can go even further though! I just need Kahboom to edit the voltages even higher, but I'm afraid that the VRM's might blow, I believe it only uses 4 or 5 power phases for the GPU.

I still need the memory voltage changed because I can't get past 1350MHz without crashing or getting any artifacts.

i would have went higher but did not want to kill your card. As far as memory goes have not looked into uncapping them due to cards not liking to much higher or blowing. I got my bios working on someones card that had a lower voltage and he blew his card in a matter of days. Its really not worth the risk. Since your voltage is locked on memory i dont know what value to look for anyways. I will revisit in time and make more adjustments. Not to say it won't work with other XFX 7950DD its more of a model speicific type of bios. Some how most likely a chip. Some Gpus know there stock bios type or at an extreme case there own serial but i dont think its a serial. But for sure some newer motherboards are able to check the checksum of the gpu and its bios and if it does not match it does not boot at all. Since each gpu bios checksum is model specific it will look for this value on some locked gpus just to boot no matter what. So we found out today voltage caps or locked voltages can be removed or just lifted to what you want on a locked card like yours as long as the bios file value is corrected to stock values.
Edited by kahboom - 6/3/13 at 8:59pm
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post #19 of 1284
kahboom,

Thanks for the thread, and the work you've put into the bios files you've already created. I've been working with my ASUS 7970 DC2T for a few months now trying to unlock it's potential. I've been limited to an older version of GPU Tweak (by ASUS) and a locked voltage. Can you please see what you can do with the following bios:

ASUS 7970 DC2-Top
bios 015.023.000.002.000000 (113-AD45600-204) Dec 22, 2011
Dual Link DVI bios: DC2T_15_023.zip 41k .zip file

1180MHz core at 1.219v (what I set using the TechPowerUp tool which is folding 24/7 stable)
1650MHz memory at 1.60v (default)
AIC Quality is 70.4%
50% Power Target (Default is 20%)

I would like to link your thread/modded bios for this card to my ASUS 7970 thread. Again, thanks for all your work. I know this level of detail and scope of work has taken a lot of your time.
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post #20 of 1284
Thread Starter 
Quote:
Originally Posted by ericeod View Post

kahboom,

Thanks for the thread, and the work you've put into the bios files you've already created. I've been working with my ASUS 7970 DC2T for a few months now trying to unlock it's potential. I've been limited to an older version of GPU Tweak (by ASUS) and a locked voltage. Can you please see what you can do with the following bios:

ASUS 7970 DC2-Top
bios 015.023.000.002.000000 (113-AD45600-204) Dec 22, 2011
Dual Link DVI bios: DC2T_15_023.zip 41k .zip file

1180MHz core at 1.219v (what I set using the TechPowerUp tool which is folding 24/7 stable)
1650MHz memory at 1.60v (default)
AIC Quality is 70.4%
50% Power Target (Default is 20%)

I would like to link your thread/modded bios for this card to my ASUS 7970 thread. Again, thanks for all your work. I know this level of detail and scope of work has taken a lot of your time.
Is your target voltage with load or no load when you measured and using no power tune. When profile is set for your new stock clock make sure voltage is what you need because profile will be made for it. Also what limits do you want for core and ram? Power tune will be unlocked to50% I get off work in a few hours. So i have a few others to edit as well. What max core where you looking for?
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