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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?

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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: noob.hu/2011/10/21/asdf.jpg (Note: The blue X may show the perfect place for the fan(s).) – Shiki Oct 21 '11 at 14:42
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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.

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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
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