Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have stock overclocked GTX 580s which run so hot that the driver crashes. I can dial up the fan manually using Nvidia Inspector. That fixes the problem, but i have to tinker around all the time and listen to the fan more often than necessary.

So, I tried loading my VBIOS into NiBiTor, but everything was greyed out. Is there any other way to edit fan/temp thresholds in the VBIOS and flash it back please?

share|improve this question
Warranty?...... – Shiki Oct 21 '11 at 12:50
Nah, dont want to RMA the cards. I have yhree stacked on each other so the cooling just isnt good enough at stock fan speeds. Just want to up them a couple percent and foget it. – Maciej Swic Oct 21 '11 at 13:28
Hmm. Why don't you mod your case? I mean screwing holes for 8 or 12cm fans and then install like 2*12cm fans near your VGAs. With this 'hack', you'll get enough air pushed into your case. Seriously, it's better than any software / modiying fans. It requries only basic skills to do so. :) – Shiki Oct 21 '11 at 13:30
Because i have the Corsair Obsidian 800D with good airflow and lots of fans already. – Maciej Swic Oct 21 '11 at 13:31
I also made a very professional drawing about the technical side of things: (Note: The blue X may show the perfect place for the fan(s).) – Shiki Oct 21 '11 at 14:42
up vote 1 down vote accepted

If you're using Windows 7 then my first thought would be to leave the BIOS as is and use something to control the fan to how you want. I have been using MSI Afterburner for a long time to control the fan speeds on my ATI 5850, it works along a line graph and plotting which is real nifty.

share|improve this answer
Does it support modifying the automatic fan curve? I already know how to manually control the fan as stated in my first post. I dont want to have to change fan speeds all day, just set them once and forget it. – Maciej Swic Oct 21 '11 at 13:21
@MaciejSwic - In order to do that, I think you may need to disassemble the BIOS, write a new one, write it the GPU. The warranty will be void, and there is a slight chance of bricking the card(s). – Shiki Oct 21 '11 at 14:46
No MSI Afterburner does allow specifying a fan curve with a set it and forget it setting so it will act as if your GPU BIOS fan profiles have been modified without touching your GPU BIOS – Sandeep Bansal Oct 21 '11 at 15:16
@Shiki I inderstand that and I'm perfectly fine with that. I modified the VBIOS for my 7800 GTX before, but i dont remember which tool i used. – Maciej Swic Oct 21 '11 at 15:18
@Sandeep Bansal ok then, didn't expect that but Ill try it. – Maciej Swic Oct 21 '11 at 15:19

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.