1. Download the above links
2. Open the folder and locate a file named "KeplerBiosTweaker.exe" and double click it
3. Click "ReadBios"
   
4. Select your graphics card by entering the number that corresponds to it and pressing enter. If you're running dual, tri or quad SLI just select the first card. In my case I've got 2 x GTX680.
   
   
5. KeplerBiosTweaker will open up
6. Save a backup of your BIOS by clicking "Save BIOS As", place it in a safe location
7. Modify your maximum fan speed from 85% to 100%
   
8. Press "FlashBios" on the bottom right corner, next to "ReadBios" in step 3
9. A dialogue will open up, press "Y"
10. If you have dual, tri or quad SLI the same dialogue will open up for each card, just keep on pressing "Y" so that your other cards are flashed with the same BIOS. Only do this if all the cards you're flashing are the exact same card.

HeavyHemi
 
That's great and all (and old news) but simply increasing the max fan speed allowed to 100% screws up the fan profile in the BIOS and how it operates at various temps.

Bacender

HeavyHemi
 
That's great and all (and old news) but simply increasing the max fan speed allowed to 100% screws up the fan profile in the BIOS and how it operates at various temps.

 
Why did you quote my entire post?
 
Anyway regarding your point -- You can modify your fan curve manually via EVGA PrecisionX to accomodate the new fan speed. I've been using it with BF4 for the last few days and no issues.
 

ty_ger07

OV3RCLK4
It only voids the warranty if you RMA it with a modded bios. You can always re-flash to the original bios and the warranty will still be valid. Like ty_ger07 said, make sure you backup your original BIOS before doing anything. You can use GPU-Z to backup the BIOS.

But when you do it, the warranty is void, right?  And you would use a warranty because a product is broken.  And if a product is broken, you can't flash the BIOS back.  It's easier to just say "it voids your warranty -- do at your own risk".

ty_ger07

wmmills
But if the product is sooo broken that you cant boot it in anyway to reflash it, then its not gonna matter what bios is on it.

Don't be ignorant and don't support malicious actions.
 
If you RMA a card with a custom BIOS, you are doing something which is both immoral and illegal.  Additionally, you are selfishly increasing the costs of future products for everyone.
 
I am not sure if EVGA will catch your custom BIOS, but they forward their "defects" to NVIDIA who does catch your custom BIOS.  The card does not need to work in order to read the BIOS EEPROM chip.  The chip can be connected to by external means and its data can be read.
 

But if the product is sooo broken ...

 
You have to ask yourself why it broke in the first place.  Did your custom BIOS contribute to the problem?  Did you give it too much voltage and overheat it too much?  Can you be absolutely sure that your modifications did not contribute in any way to the card no longer working?
 
If your modification changed the card in any way (which obviously it did), you cannot be certain that you did not contribute to the failure of the card and therefore you cannot in good conscious replace the card under warranty.
 
You chose to modify the card and you should choose to throw the card in the garbage when it breaks and buy a new one at your own expense.  That is morality and character.  That is why all these guides SHOULD have a disclaimer and usually DO have a disclaimer.
 
I personally have modified many many many of my cards and I have not replaced a single one under warranty because I take responsibility for my actions.

SeanEJohan

ty_ger07

wmmills
But if the product is sooo broken that you cant boot it in anyway to reflash it, then its not gonna matter what bios is on it.

Don't be ignorant and don't support malicious actions.
 
If you RMA a card with a custom BIOS, you are doing something which is both immoral and illegal.  Additionally, you are selfishly increasing the costs of future products for everyone.
 
I am not sure if EVGA will catch your custom BIOS, but they forward their "defects" to NVIDIA who does catch your custom BIOS.  The card does not need to work in order to read the BIOS EEPROM chip.  The chip can be connected to by external means and its data can be read.
 

But if the product is sooo broken ...

 
You have to ask yourself why it broke in the first place.  Did your custom BIOS contribute to the problem?  Did you give it too much voltage and overheat it too much?  Can you be absolutely sure that your modifications did not contribute in any way to the card no longer working?
 
If your modification changed the card in any way (which obviously it did), you cannot be certain that you did not contribute to the failure of the card and therefore you cannot in good conscious replace the card under warranty.
 
You chose to modify the card and you should choose to throw the card in the garbage when it breaks and buy a new one at your own expense.  That is morality and character.  That is why all these guides SHOULD have a disclaimer and usually DO have a disclaimer.
 
I personally have modified many many many of my cards and I have not replaced a single one under warranty because I take responsibility for my actions.

LOL@ another rant-fest from Ty-ger07................12 year old's..............

Bacender
Lots of tension in this thread for what amounts to nothing more than a straight forward method of unlocking your fan.
 
I don't see how that could cause any undue stress on your card or make it more failure prone. The GTX480 got slammed by all reviewers for running too hot and too loud -- I'm sure the reference boards for the GTX6 series had a 85% fan limit imposed on them in order to keep the card quiet for the reviewers... A GTX680's fan running at 100% is ridiculously loud, more so if you're running SLi.
 
Either way, considering EVGA released official BIOS unlocks for the GTX5 series, i don't see how this poses such a large issue, aside from some people pushing their volts too high... which i'm sure would be easy to spot if EVGA were to receive a cooked card.
 

SeanEJohan
Honestly altering the fan speed max from 80-100% does nothing for me, since my fans have yet to see past 68% fan speed to date. Adding voltage to the already 1.175 max is not necessary, my 670 FTWs run 1319mhz core fine with the standard 1.175 voltage locked with K-boost.
These mods are not needed, nor recommended.

All respect to your situation, but you're running a nerfed card in (i'm assuming) a colder climate.
 
I'm in Australia, it's currently summer, and my cards running at stock can push nearly 100°C when playing Battlefield 4. The 100% fan unlock helps keep my temps below 80°C.

SeanEJohan
 
That sucks to hear man, even when its 105F here in Chicago my cards stay well under 60C and under 68% fan speed. You don't have air conditioning? I'm not sure what a nerfed card is?? The 670 FTW is a 680 with one SMX unit turned off, the 670 FTW has the 680 fan/heatsink/cooler as well as a 8 phase VRM, so basically the 670 FTW is more a 680 than a 670. I wouldn't call it a nerfed card, as I beat 85% of 680 sli scores in Valley 1.0 leaderboard

Tyraele
 
I thought about going into a discussion about entropy and thermodynamics after reading this, but I digress.  The easiest way to reduce component temperatures is to lower the ambient temperature.