Util to edit the 6800 bios's?

[sponge bob]

#1 post
i need some Know how, i just buyed my pny 6800gt it overclocks crappy like 404/1,1 i think my 300w aopen is problem, but i need to know how can i flash it to ultra speeds.. i changed my bios but how i flash it?
sry for my bad english but i hope u can understand

[eclypse]

Anyway to get 1.6-1.7v as an option? My XFX 6800 Ultra SLI super water cooled only moved from 450 to 477 with the max 1.5v on the 3d. I maxed all the voltage options and can only get the ram to 1230Mhz.

[[XC] moddolicous]

#1 post
i need some Know how, i just buyed my pny 6800gt it overclocks crappy like 404/1,1 i think my 300w aopen is problem, but i need to know how can i flash it to ultra speeds.. i changed my bios but how i flash it?
sry for my bad english but i hope u can understand

You can use nvflash to flash, but you should first upgrade your PSU.

[[XC] moddolicous]

Anyway to get 1.6-1.7v as an option? My XFX 6800 Ultra SLI super water cooled only moved from 450 to 477 with the max 1.5v on the 3d. I maxed all the voltage options and can only get the ram to 1230Mhz.

I think the max you can get in the bios is only 1.5, but you might be able to do a pencil mod.
http://www.vr-zone.com/index.cgi?i=926&s=1

[stealthbomber]

The latest version of NiBitor v2.0 allows editing the 6800NU/GT/U bios memory timings:

http://www.mvktech.net/index.php?opt...&filecatid=916

Can anyone decipher the memory timings?

[Mavke]

The latest version is now NiBiTor v2.0a...
NiBiTor v2.0a

[AdvModDev]

eVGA 6800GT w/ BIOS v05.40.02.15.01 dated 2/18/05.

Edited the stock BIOS using NiBitor v2.1 to increase vcore to 1.4V (from 1.3V) and GPU/mem speeds to 400/1100. Modded BIOS flashes fine but fails D3 ROE and 3D05 rather quickly even w/ stock speeds. This card will do 418/1200 w/ stock BIOS. What happens when it crashes is the monitor loses it's signal and I have to force shutdown the PSU. Resetting the sys won't do, I have to kill all power completely. So WTF? I've tried just increasing speed and leaving the voltage at stock, same crash/symptoms. I've tried flashing an eVGA Ultra BIOS, same. Is the problem just this card? eVGA? 6800GTs in general?

[Mavke]

Well I think it might be just your card that can't handle well the 1.4v... Although just to make sure on the BIOS, are you able to provide the BIOS?

[AdvModDev]

Yeah, first thing I did was to make a backup. NiBitor actually let me choose 1.6V when I extended the voltage table (1.4V was available w/out extending and 1.5V did not exist). But using 1.6V crashed much more quickly than 1.4V. Anyways, much appreciation and the highest respect to you, xtremetheme, and unwinder for even making this possible.

[CD 1986]

Here are a couple of voltage modified bioses in case you want to try them. The first is your stock GT bios modded to 1.4v with clocks of 350/1000. The second is an eVGA 6800 Ultra bios, which is at 1.4v also and has clocks of 400/1100 (still within your card's range). You can always change the clocks using Nibitor 2.1 later to suit your needs.

[Anti-Hero]

anyone out there have a modded NX6800-td256e bios?

seems no one is looking it to this paticular card

[jimmor]

anyone out there have a modded NX6800-td256e bios?

seems no one is looking it to this paticular card

Linked below in M68N357p.zip file, is a moded version of the MSI6800NU PCI-E rev 05.41.02.17.13 bios. However, I produced this particular bios for someone in nvnews forum who only wanted to enable 2D/3D modes and unlock the gpu volts table.

And although it is currently set at 300/350/700 with 1.1v in 2D and 1.3v in 3D, you can obviously use NiBiTor v2.1 to set whatever you want !

EDIT:

And just in case you want to try another 6800nu PCI-E bios, I have also linked below in 68N3585p.zip file, a similarly moded Nvidia rev 05.41.02.17.25. This bios has stocks at 300/350/850. But as I said before, you can set for whatever you want.

[Anti-Hero]

a working bios..

seems almost to good to be true, i havent flashed yet has this been proven to work?

will this work with all 6800 NU PCIE cards?

[jimmor]

a working bios..

seems almost to good to be true, i havent flashed yet has this been proven to work?

will this work with all 6800 NU PCIE cards?

Although nothing in life is guaranteed, the linked bioses have been successfully used with other peoples 6800nu PCI-E cards.

And if you did a little searching around, you would have found where I originally posted these particular bioses through Guru3d and nVnews forums.

[Anti-Hero]

i noticed the throttle is out will setting 2d and 3d to 1.4 eliminate any issues with that

[jimmor]

i noticed the throttle is out will setting 2d and 3d to 1.4 eliminate any issues with that

What "throttle" is out ???

And no idea why you would want to set 2D and 3D at same 1.4v levels ?

What problems do you have ?

Or more to the point, if you can't use the bioses as intended, or at least until you have problems, then you would be just as well going back to using your original bios !!

[Anti-Hero]

i dont have problems i want to raise my core voltage for better overclock.

I can now change the 2d and 3d voltages but the throttle is grey'd out. So if i cant push that up then it will lower the voltage to much resulting in a crash

[jimmor]

i dont have problems i want to raise my core voltage for better overclock.

I can now change the 2d and 3d voltages but the throttle is grey'd out. So if i cant push that up then it will lower the voltage to much resulting in a crash

Where did you pick up this rubbish about throttle crashing your 6800 card. Have you seen it happen, and what tool did you use to measure what was actually happening ???

Nibitor like any decent editing tool grey's out the items that don't apply !

Why don't you just try the bios before inventing problems you don't yet have ?

Having the gpu at 1.4v is well within its spec, so no reason for you to have many issues. However, depending on how poor the heatsinking is on your card, gpu and memory chip temperatures are the main things to keep a wary eye on. Extreme temps have never helped with ensuring a long lifespan. Fitting a Arctic NV5 cooler to my Leadtek 6800le has not only made it run cooler, but also much quieter.

[AdvModDev]

Here are a couple of voltage modified bioses in case you want to try them.

Thanks. I'll try them out when I get around to it...will post back if they work or not.

[LilGator]

What would be the best way to go about making a new BiOS for a Leadtek 6800NU ?

I imagine with the beefy copper cooler it has, 1.4v wouldn't be a problem. Also, enabling 16-pipes and extra vertex should be possible as well, correct ? Anyone have a Leadtek 6800NU ?

[PikeyUK]

I have a Leadtek A400 TDH, unlocking the pipelines didn't work as got lines across screen with artifacts in 2d and 3d. This isnt to say it wont work for you as its pot luck from what i have found out about the core.

I upped voltage to 1.5v throttle didn't make any difference but still runs happy at 50d with stock cooler (i do have good case cooling though).
Only managed to get 380/820 with stock but with 1.5v it went to 429/880 but was slightly unstable, this put 3dmark 05 up 700 marks.
Runs stable at 410/850 and marks 400 more than stock so not to bad.

PS i only flashed and didn't clear the bios as had no pci gfx card if went tits up and didn't dare risk it

Cheers for info on this forum, most helpful in clocking this card, top thread.



Ninja edit: Sorry guys 3dmark 05 went from 3600ish stock (cpu oc but standard card), 3785 @385/820 stock voltage and 4455 @410/850
Hope this helps