8800gtx Bios Mod

[Cyba_Mephisto]

Hi guys!
Is there anyway flashing a 8800Ultra BIOS on a 8800GTX?
I cant even load my BIOS with NiBiTor.
And:
How to clock the shaders seperately?
Has anyone got the Ultra-clock @ his GTX?

[Delly]

use Nibitor 3.4a...works fine...

[bazx]

flash to this bios on ya 8800gtx you will be very happy

http://www.benchtec.co.uk/1/8800gtx/ACS3KO.zip


here is a guide

How i flash a nvidia 8800gtx
This may not work for every one and there may well be other ways to do this but I have just flashed my gtx in this manner, if I have made any errors in this post please remind me immediately so I can change

Make a boot floppy in windows

1 insert blank floppy in the “A” drive, open my computer right click the “A” drive and select format
2 select: create an MS-Dos start up disk
3 Go and get nvflash from MVKTech
http://www.mvktech.net/index.php?opt...&filecatid=859
4 unzip nvflash and copy the (files) cwsdpmi.exe and nvFlash.exe to the start up disk you just made
5 now copy the new bios file to be flashed to the start up disk (XXXXX.rom)
Ok you now have the floppy ready to flash your 8800gtx
6 set boot order in mother board bios to boot from the A drive
7 push floppy in drive and reboot when the start-up disk has entered dos
Type at the prompt: dir and hit enter you will now see the contents of the floppy drive that you made in windows
8 make a copy of your 8800gtx bios
Type this and hit enter at the prompt: nvflash -b backup.rom
9 flash the bios to the new xxxx.rom type this at the prompt: nvflash -5 -6 xxxx.rom

Please note xxxx is the name of the new bios file ie ACS3KO.rom or what ever name it has

[bazx]

I flashed my GTXs with the AC3 BIOS and now Windows only recognizes one at a time! What can I do?

un-install vga driver from control panel and deleat the nvidia folder on ya c drive
then reboot

re-install vga driver

[dertimaushh]

I've flashed my Gtx to Ultra. Modified it with Nibitor 3.4a and then flashed via nvflash -4 -5 -6 NAME.rom

Works great. Before flashing you should know the max values of your card. I am using 621/1566/1009 for the moment. Thinking of removing my IHS for better temps and higher clocking

greetz

tim

[bazx]

I've flashed my Gtx to Ultra. Modified it with Nibitor 3.4a and then flashed via nvflash -4 -5 -6 NAME.rom

Works great. Before flashing you should know the max values of your card. I am using 621/1566/1009 for the moment. Thinking of removing my IHS for better temps and higher clocking

greetz

tim

tim did you flash the ultra bios right onto a gtx

or did you Modified a gtx bios 621/1566/1009

baz

[dertimaushh]

tim did you flash the ultra bios right onto a gtx

Yes

Here you'll find the XFX 8800Ultra Bios and the modded one.


http://dateihoster.de/preview.php?fi...1d99c47ce9.rar

[rodemannetje]

8800ultra bios works great. With nibitor i changed setting to 639 core/1520 shaders/1020 mem. Stable as ever, and got a new 3dmark06 personal record. With rivatuner i fixed the fan settings at 85%, so the card keeps low in temperature (around 50 celcius idle)

[billdavis]

is the 8800ultra gpu core voltage the same as the 8800gtx

[dertimaushh]

No. Gtx 1,3V vs. Ultra 1,35V

Unfortunately the Ultra Bios does not change the voltage on the Gtx Cards.

[Disaster_Master]

Are there other advantages besides the higer clockrates because my GTX can do 650 on core and 1008 mem and 1512 shader core on stock cooling and i get 1k more 3d mark 06 score?