Guide: Unlock Gtx 460 Voltage Cap

[MikeFallen]

Hey guys this is a simple guide on how to remove the 1.087V voltage cap on your gtx 460 allowing you to push the voltage all the way to 1.212V to help achieve the overclock you want. I just did it using this exact method so i thought i would share.

First off i assembled a package of software you will need.
GPU Z 4.7
nvFlash 5.95
Nibitor 5.8

Download Here


1.
Acquire your bios with GPUz and it's save to file feature:


2. Open the bios file with Nibitor:
go to Tools> fermi Voltage and select the max voltage you want from drop down.



Hit apply and save the new bios under C:\ as mod.rom

3. Copy the contents of nvflash folder to C:\

4. open cmd with admin privileges

5. type cd / this will take you to root of c directory

6. type nvflash -b backup.rom (this backs up your original firmware)

7.Type nvflash -5 -6 mod.rom (this flashes the bios)

8. it will ask you if you are sure press y to continue

9. DONE enjoy your 1.212 voltage cap





I DO NOT TAKE RESPONSIBILITY FOR YOUR ACTIONS.... USE THIS GUIDE AT YOUR OWN RISK

[Arinoth]

Does this only work for the 460s? Wouldnt mind my 465 unlocked and flashed with 470 bios to have a higher core voltage as im maxed at 1087mV right now

[lowfat]

I just got other people to mod the bioses for me

Not sure if it would work w/ the GTX465/GTX470. It wouldn't hurt to check though.

[ilya]

Originally Posted by Arinoth

Does this only work for the 460s? Wouldnt mind my 465 unlocked and flashed with 470 bios to have a higher core voltage as im maxed at 1087mV right now

It's just a bios flash, there's a bunch of bios' out there with higher voltage caps for all the higher end Fermis. If you have an EVGA card, a while back they released a free bios update for most of their Fermis with higher voltage caps and better stock fan profiles. Otherwise you'd be doing so at your own risk.

[MikeFallen]

This technically SHOULD work with all 400 series cards as long as it is supported by Nibitor which currently all are except the 450 i think


save your bios and check out what you can edit with nibitor....cant harm anything by reading the bios and opening it up.

[Arinoth]

Yeah i got that elusive MSI 465 unlocked to a 470, i guess i should look into it as the vcore is rather low. Thought i'd ask anyone if they knew before i went hunting. Its bed time so i'll try this tomorrow, maybe

[Sagath]

Thanks for posting this for the masses, but can you fix that last pic? Its kinda ugly in size

[MikeFallen]

Sure sometimes i forget not everyone has 1900x1200 monitors XD

[Arinoth]

Just did this with my 465/470 and was able to unlock the voltage to the max allowed. Thanks for the guide, had no problems following any of it.

[geokilla]

How's the overclocks with these additional voltage?