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NVidia Maxwell/Kepler BIOS editing thread. GTX 2XX to 9XX now supported.

357K views 4K replies 702 participants last post by  King666 
#1 · (Edited)
No magic tricks here. I'll be using KBT (Kepler BIOS Tweaker) to modify the BIOS. You can download this tool here: View attachment KeplerBIOSTweaker1.27.zip

It can look a bit intimidating, so if you don't want to mess with any of the settings, post your BIOS here and I'll modify it accordingly.

The general modifications include a higher TDP, removal of GPU Boost and unlocked core voltage of 1.225V (Some restrictions apply).

Maxwell cards can typically be unlocked up to 1.28V. However, there are some cards that have locked down voltage modules and won't allow anything past 1.21V.

For Maxwell cards, I will be using the MBT (Maxwell BIOS Tweaker). You can download that from here: View attachment MaxwellBiosTweaker1.36.zip

To edit the BIOS of these NVidia cards, I will be using NiBiTor 6.06 which you can get from here: View attachment NiBiTor6.06.zip

I can unlock 1.21V for 500 and 400 cards (Risky if you don't have good cooling!). It's a bit different than 600 and 700 cards in that I can specify a range for the core voltage, i.e. 1.05 to 1.21 volts for 400 and 500 series cards. You can set the voltage to whatever it is that you're comfortable with. Voltage control for the Fermi cards is a lot more flexible than Kepler based GPUs.

For 200 Series cards, it may or may not be possible to change the voltage, but most of them go as high as 1.2 volts depending on what the vendor has set the limit to. These are much older cards so I don't expect a lot of people running them in this day and age. Still, nice to be able to get the most out of your old hardware.


Instructions

Remember that you're doing this on your own risk. I won't be held responsible for bricked or damaged hardware.

You can extract and save your graphics card's BIOS by using GPU-Z which can be downloaded from Here.

The link is constantly updated with the latest version of the program.

The BIOS file needs to be in .zip format if you want to upload it to the OCN forums, so use any compression program like 7-Zip, Winrar, Winzip, etc. to package the file and then upload it here. Again, it needs to be in .zip format not .rar, .7z, etc.

7-Zip is by far my favorite compression software. It can be obtained from Here.

The simplest way to upload and post your BIOS in this thread is to use the "Attachment" button which can be found in the toolbar section located on top of the "Reply" box. It is the 5th icon from the right.


The easiest way to flash the new BIOS to your card is with the Windows version of NVFlash. You can find the latest as well as archived versions of NVFlash, Here

Simply drag and drop your new BIOS on nvflash.exe and click "Y" when prompted. Restart your PC after the process is finished and your new BIOS will be in full effect.

For Maxwell cards, the process is a bit different. First, disable the GPU via device manager, then flash the new BIOS as explained above, re-enable your GPU and restart your PC.


FAQ

Q: Afterburner/PX/etc. is reporting X voltage while I asked for Y voltage. Why is that?
A: These programs can't always read the voltage correctly. Most of the time, the modified voltage is in effect but the program is unable to report it. For precise voltage measurements, you need a voltmeter.

Q: I can't seem to change the voltage, what happened?
A: With the modified BIOS, the card is set to hit maximum voltage under load, and as such, there is no need to change voltage manually via software as it doesn't do anything

Q: Can you overclock my card for me so it has higher performance?
A: I can remove Voltage and TDP limitations. Finding out how far the card overclocks is up to you as every card overclocks differently due to silicon lottery.

Q: Can you modify memory voltage for Kepler/Maxwell cards.
A: No.

Q: My card/drivers keep crashing after I applied your BIOS. What's going on?
A: Reset the overclock that you've done through Afterburner/PX/etc..

Q: Can you help me unlock my card?
A. Won't know till I have the BIOS, so just post the BIOS.
 
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#4 ·

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#6 ·

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#9 ·
Currently have a modded bios I did that just changed the fan speed and voltages. Here is my stock bios backup -

GK104.zip 57k .zip file

EVGA 660ti Reference. Voltage to 1.212. Would like minimum fan speed to be 10% and max 100%. No throttling, and set the base clock to 980mhz, and memory to 1750. Set the boost limit to 13XX so I can manually overclock it to find stable. Then after that can I open up the bios myself, and if the only thing I change is the base clock to the stable I found it will work the same correct? Thanks a lot. I really want to learn about this bios editing for gpu stuff. Seems very interesting. You rock man! And if you have time can you explain how you achieve no throttling? As I said i want to learn
biggrin.gif
 

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#11 ·
Quote:
Originally Posted by UaVaj View Post

can you modify my 680 bios to just get rid of gpu boost?
Not entirely, but I can make it so that it wouldn't throttle as much.
 
#12 ·
Quote:
Originally Posted by willll162904 View Post

Currently have a modded bios I did that just changed the fan speed and voltages. Here is my stock bios backup -

GK104.zip 57k .zip file

EVGA 660ti Reference. Voltage to 1.212. Would like minimum fan speed to be 10% and max 100%. No throttling, and set the base clock to 980mhz, and memory to 1750. Set the boost limit to 13XX so I can manually overclock it to find stable. Then after that can I open up the bios myself, and if the only thing I change is the base clock to the stable I found it will work the same correct? Thanks a lot. I really want to learn about this bios editing for gpu stuff. Seems very interesting. You rock man! And if you have time can you explain how you achieve no throttling? As I said i want to learn
biggrin.gif
GK104-980-1750-1.21V-300WTDP.zip 179k .zip file


I'm not sure if the fans will spin as low as 10% but I set the value so you have to test it out yourself. 100% fan is now available.

No throttling is kind of hard to achieve in 6XX cards since GPU boost 1.0 monitors the temperatures and starts throttling at 70C. I have, however, expanded the power limitation for the card so if you can keep it cool, it'll clock as high as possible without throttling.
 

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#13 ·

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#14 ·
Quote:
Originally Posted by Cyclops View Post

Not entirely, but I can make it so that it wouldn't throttle as much.
thanks for the correction. gpu boost (nvidia marketing name) for gpu throttle (what it actual does).
 
#15 ·
Quote:
Originally Posted by Cyclops View Post

GK104-980-1750-1.21V-300WTDP.zip 179k .zip file


I'm not sure if the fans will spin as low as 10% but I set the value so you have to test it out yourself. 100% fan is now available.

No throttling is kind of hard to achieve in 6XX cards since GPU boost 1.0 monitors the temperatures and starts throttling at 70C. I have, however, expanded the power limitation for the card so if you can keep it cool, it'll clock as high as possible without throttling.
thanks bro! +rep for sure. Also if i edit the bios myself and just change the core clock to what i find stable it will work fine right?
*edit* does the boost table have to be raised for the card to clock higher as well? Since its maximum atm is 1202
 
#16 ·
Quote:
Originally Posted by willll162904 View Post

thanks bro! +rep for sure. Also if i edit the bios myself and just change the core clock to what i find stable it will work fine right?
*edit* does the boost table have to be raised for the card to clock higher as well? Since its maximum atm is 1202
It might, it varies from card to card. Change it see where it gets you. You don't need to touch the power table ever again as the value I set for it is way above it would ever need.
 
#18 ·

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#19 ·
GTX6804GBFTW.zip 57k .zip file


Grabbed this off techpowerup, any way you could remove the volt limit or set it higher along with the fan speed?
Thanks!
 

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#20 ·

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#21 ·
Worked perfectly, thanks again mate!
 
#23 ·
Quote:
Originally Posted by Sem View Post

Running SLI Asus 780 DC2s

great clockers and soon will be under water can you just unlock the 1.212 voltage please

and make no other changes i will adjust the clocks myself unless you dont mind telling me how to increase the max volts myself

thanks

Asus.GTX780.1.21v.zip 433k .zip file
 

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#24 ·
Do any of these mods make it so my clockrate offsets are fully implemented?

I'm not sure exactly what I'd want done to my BIOS. I just want to be able to find it's limits like I used to. Damn new-fangled tech...

I guess TDP and voltage limits expanded, and GPU boost is pretty useless to an overclocker, I say. I want control.
thumb.gif


This is my stock EVGA GeForce GTX 770 FTW 4GB BIOS:

GK104.zip 123k .zip file


Appreciate your help.
smile.gif
 

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#25 ·
Quote:
Originally Posted by Rezard View Post

Do any of these mods make it so my clockrate offsets are fully implemented?

I'm not sure exactly what I'd want done to my BIOS. I just want to be able to find it's limits like I used to. Damn new-fangled tech...

I guess TDP and voltage limits expanded, and GPU boost is pretty useless to an overclocker, I say. I want control.
thumb.gif


This is my stock EVGA GeForce GTX 770 FTW 4GB BIOS:

GK104.zip 123k .zip file


Appreciate your help.
smile.gif
GK104-1.21V-400WTDP-100Fan-1089Base.zip 164k .zip file
 

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#26 ·
Quote:
Originally Posted by Cyclops View Post

Quote:
Originally Posted by Sem View Post

Running SLI Asus 780 DC2s

great clockers and soon will be under water can you just unlock the 1.212 voltage please

and make no other changes i will adjust the clocks myself unless you dont mind telling me how to increase the max volts myself

thanks

Asus.GTX780.1.21v.zip 433k .zip file
Sorry to be a pain but what i wanted was for the card to use the default voltages but if i wanted to OC with NVI or Afterburner i can move the slider and select all the different voltages up to 1.212v instead of just 1.20

Thanks
 
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