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Guide to 6800 "GT" -> "Ultra" Bios Flash

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Nebulous

Señor Senior, Senior
Joined
Oct 11, 2002
Location
The Empire State
Several guyz already tried this flash, and let me say they're in posession of $400+ paperweights now.

Unless it's a proven experiment that will not make anymore expensive paperweights, i would'nt try it.

Oh yeah, someone wanting to do this flash and asked the person who did the flash and kill his card, he said after killing it: "Can't make an omlet without breaking a few eggs"

.....there's one born evry minute.
 

oc_byagi

Member
Joined
Apr 28, 2004
Location
Sunnyvale, CA
I just flashed my ARTIFACTING 6800GT (see my thread) and it posted fine. Of course I can't test anything since my 6800GT is giving me a hard time, it didn't seem to have broke anything.
 

Mr.Guvernment

Member
Joined
Feb 26, 2003
^^^ how can you boot to dos when the video card post occurs before booting up? it is not possible.... if your vid card is not booting - you can not get into dos on that system.


you would need a PCI card.
 

xtrmeocr

Member
Joined
Jun 26, 2002
i wouldn't flash unless your using a 3rd party cooler. the voltage from 1.3 to 1.4 is going to overwhelm the stock GT heatsink/fan.
 

walldow

Member
Joined
Sep 19, 2002
Location
the bluegrass state
thanks for the heads up! k question!

Q:is this just for nvidia referance design cards only?

the reason im asking i have been looking into the Albatron FX6800GT pretty hard and seems they are making there own desighn! (im an active member of Albatron Singapore. on there forums, one of there tech reps over the forums stated that Albotron is not using the NVIDIA referance sesighn for the GT version?)anyway differant card desighn, differant bios?


i guess we will see? i plan on volt modding the card anyways so the only real advantage to me would be the titer memory timings! but on the other hand it could be a down fall? tighter timings means less overclock in most cases!even though youre gaining bandwith with titer timeings, sometimes a higher overclock can gane you even more bandwith!

i myself would rather run 1500mhz on looser memory timings than 1200mhz on tite ones! some may beg to differ!
 

bobmanfoo

Disabled
Joined
Apr 30, 2004
oc_byagi said:
did you try the bios hack yet?
nope not doing anything till i get rid of this POS hs, really disappointed in it, its so dinky compared to the ultra

GT:
6800gt-cooler1.jpg

ULTRA:
 

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oc_byagi

Member
Joined
Apr 28, 2004
Location
Sunnyvale, CA
hmmm what dissapoint you so much??? just the cooling??? I'll be getting vga silencer rev 4 either way so I'm fine with GT. (plus ultra costs over $600 at the moment)
 

oc_byagi

Member
Joined
Apr 28, 2004
Location
Sunnyvale, CA
ok, flashed GT to Ultra, no artifacts so far, looking great.

UPDATE: Gained 800 POINtS IN 3DM2003 just from BIOS. yay :bday:
 
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fafnir

Member
Joined
Jul 9, 2003
Location
moved
btw, if you're editing your own bios, DON'T FORGET TO NVCHK.exe THE FILE WHEN YOU'RE DONE


nvchk.exe write a new checksum for the file, without which, will result in a no-post (bios chksum error)



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fafnir

Member
Joined
Jul 9, 2003
Location
moved
just mailed jmke at the [M] who said he'll do an acticle on this, with much better instructions



btw, here's a newer file that'll work with **ALL** GT's;



does not include default clock speed boosts, though both the voltage and the throttling has been done, runs slightly cooler than the stock ultra bios also, uses 1.4V and stays at 1.4V (even on startup)

use nvflash 4.42 (ONLY 4.42, not 5.0, not 4.46) and;

nvflash4 -p -u -2 "ultra".rom (replace "ultra" with whatever the file name is)


link: http://www.ocforums.com/attachment.php?attachmentid=33310



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heyheyhey

Registered
Joined
Jan 29, 2004
I just did it... only got 100 points and 10MHz increase. Oh well, I can say I have an Ultra now :)