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NiBitor BIOS Flash GTX 580

post #1 of 14
Thread Starter 
*SEE UPDATE WITH SOLUTION AT BOTTOM OF THIS POST.

How do you use NiBitor to BIOS flash a GTX 580 to the following modest specifications?:
  • Core Clock - 797 MHz
  • Shader Clock - 1594 MHz
  • Memory Clock - 2025 MHz (4050 MHz)
  • Fan Speed - 76%

The reason I want to do this is that:
  • Windows 7 64 with Service Pack 1 is a bit unstable with some overclocking applications.
  • Updating drivers sometimes breaks overclocking applications until new versions are released.
  • Sometimes overclocking applications are unstable.
  • If I give a video card to someone, I want the fans to run fast regardless of whatever software is on the computer.

The firmi values under "tools" for the current NiBitor release seem indecipherable to me. I've successfully used NiBitor and Nvlash to bios flash cards to have higher clocks, lower clocks, and faster fan speeds.

Never had any problems with Nibitor and considering that EVGA precision has become increasingly unstable under Windows7 SP1, I'd like to just flash the BIOS and stop using it all together.

But there is a problem.

Firmi cards are different. Their clocks are arranged in "domains" under Nibitor and I have no idea how to modify my bios to reflect the values I desire.


Anybody have any experience with this?

UPDATE:

Here is the solution to flashing the BIOS of a stock GTX580 to run (stock) at GTX 580 Black Ops speeds. Note that the reason I did not simply flash to the EVGA GTX580 Black Ops BIOS is that it is a different vender and that might cause some weird check-sum mismatch.

The way I did this was very easy:

  1. Used GPUZ to back up my GTX580 BIOS.
  2. Made a copy of that and saved it to a flash drive as a contingency.
  3. Downloaded a copy of the EVGA GTX 580 Black Ops BIOS
  4. Compared the two. (its under Firmi tools in the menus)
  5. Changed voltages & clock settings to match those of the Black Ops.
  6. Upped the lower fan range to 75%.
  7. Saved the modified file as 580mod.bin
  8. Put my modified BIOS on the bootable USB flash drive.
  9. Turned off PC & Disconnected all drives.
  10. Booted off of flash drive. (using a FAT32 flash drive formatted with HPUSBFW)
  11. Flashed to 580mod.rom. (using nvflash.exe)
  12. Hit Ctrl & Alt & Delete to soft reboot, made sure I still had a picture.
  13. Powered off, connected drives, rebooted into Windows.


The same method could be used to set the GTX 580 to pretty much any other speeds & voltages that you want. Just remember that you can easily brick your card if you don't know what you are doing.
Edited by Majestic_Lizard - 7/4/11 at 10:48pm
    
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post #2 of 14
Thread Starter 
Well, I downloaded the 580 Black Ops BIOS which is essentially where my values came from. I'll examine that and compare it with my existing BIOS.

Thanks for all of the great suggestions.
    
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post #3 of 14
Yeah I see your point,that Fermi option in NiBitor is headscratch.gif

Or you can use MSI Afterburner to set card's clocks and voltage (works flawlessly for me)..

CHEERS..
     
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post #4 of 14
Thread Starter 
Well, I examined the real GTX 580 black ops which has the values that I'm overclocking my card to. This does give me the values I would need to flash the BIOS, with one problem.

However, I noticed that the voltage of the Black Ops card is also different than stock voltage as listed for the GTX 580. I did not expect this.

This would mean that the GTX 580 black ops edition, even with its modest overclock, requires a slight bump in voltage.

imagesmall.jpg

Here is a GPUz Screen shot of the actual card:

gpuzz.gif
Edited by Majestic_Lizard - 6/3/11 at 7:30pm
    
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post #5 of 14
Quote:
Originally Posted by Majestic_Lizard;13743804 
Well, I examined the real GTX 580 black ops which has the values that I'm overclocking my card to. This does give me the values I would need to flash the BIOS, with one problem.

However, I noticed that the voltage of the Black Ops card is also different than stock voltage as listed for the GTX 580. I did not expect this.

This would mean that the GTX 580 black ops edition, even with its modest overclock, requires a slight bump in voltage.

That all depends on the chip.
    
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post #6 of 14
Thread Starter 
This significance of the voltage difference makes me think that some of the instability issues I've seen were due to using stock voltage with the card.
Quote:
Originally Posted by MR KROGOTH;13743821 
That all depends on the chip.

The EVGA Black Ops Bios I posted is exactly the same BIOS that every single EVGA Black Ops card has.

...and the cards that receive this Black Ops BIOS are picked at random (according to the technicians at EVGA I have talked to).

Again, the specs I showed were of the BIOS (which is a file) as read by Nibitor, not the actual voltage ratings on a specific card as read by GPUZ or MSI afterburner.
Edited by Majestic_Lizard - 6/3/11 at 7:17pm
    
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post #7 of 14
Ouch, that's pathetic (the 1.088v for 800 core). Mine does 850 on 1.05v. But that VID is going to change with every GPU. Mine is 1.012v at stock.
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post #8 of 14
Thread Starter 
Quote:
Originally Posted by pioneerisloud;13744143 
Ouch, that's pathetic (the 1.088v for 800 core). Mine does 850 on 1.05v. But that VID is going to change with every GPU. Mine is 1.012v at stock.

What you saw listed up there was not a specific card's VID. That was the actual BIOS (a file) opened up with a NiBitor. The BIOS on the left is the one that all stock GTX 580's have (regardless of their VID) and the one on the right is the one that all Black Ops GTX 580's have (regardless of their VID).

Basically, it shows that the Black Ops cards have a higher maximum voltage, but the same minimum voltage as the stock BIOS. I think this is so that if a GTX 580 that is selected happens to have a crappy VID, it will still run stable at the OC due to the increased maximum voltage allowance.

So, in other words, the range of voltages is a safety measure on the Black Ops BIOS to insure that even GTX 580's with a so-so VID will be able to run at those speeds.

Somebody stop me if I'm wrong.

Edited by Majestic_Lizard - 6/4/11 at 1:23am
    
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post #9 of 14
Thread Starter 
Quote:
Originally Posted by pioneerisloud;13744143 
Ouch, that's pathetic (the 1.088v for 800 core). Mine does 850 on 1.05v. But that VID is going to change with every GPU. Mine is 1.012v at stock.

Well, I modified the stock 580 BIOS to the exact specifications of the Black Ops GTX 580. Flashed, and everything appears to be working. Stock speeds are now the slight OC speeds. I'll play a few games and update with progress.
    
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post #10 of 14
Quote:
Originally Posted by Majestic_Lizard;13744677 
Well, I modified the stock 580 BIOS to the exact specifications of the Black Ops GTX 580. Flashed, and everything appears to be working. Stock speeds are now the slight OC speeds. I'll play a few games and update with progress.

800 core should be easy enough honestly. I can pull off up to 925 stable with 1.15v. So you've got plenty of room left to go. wink.gif
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