Mod BIOS PCI-E 6800GT?? [Archive] - XtremeSystems Forums

Dirt

12-25-2004, 03:43 AM

Hi!

I wonder if anybody made an edited version of a 6800GT 256Mb PCI-E Bios??

I cant handle this with Hexa edit, would be very happy if someone could provide such a bios with +0,1 core and clocks set to 450//1200

Thanks

[XC] moddolicous

12-25-2004, 09:14 AM

What do you want done to the bios, just +.1v and clocks set to 450/1200, I could try it

[XC] moddolicous

12-25-2004, 09:23 AM

Ok, I set the clocks to 450/1200, andmade the 3d and 2d voltages 1.4V. Is that what you wanted. Here's it is. Make sure you have good cooling with these clock speeds.

Skip

12-25-2004, 11:22 AM

how come when i use nibitor and look at this bioses the timings part and core slowdown temp have dashes and can't be changed. does that mean that the thermal throttling of the card is then disabled because i can't change it and its just a dash?

Dirt

12-27-2004, 02:59 AM

Moddolicous: Thnx a lot. That was just what i needed. I use Dangerden Nv68 block so I´ll be safe ;)

misteroadster

12-27-2004, 03:58 AM

hello moddolicous, can you do the same for 6800U PCI-e with 510/630 and 1,6v ?

Dirt

12-27-2004, 04:09 AM

Misteroadser: He can only kick it up by 0.1v since the original voltage on a 6800U is 1,4v i think 1,5 is the maximum without vMod.

misteroadster

12-27-2004, 04:13 AM

okay , in fact in idle i have 1,49v when i'm on the desktop , and 1,43 full 3Dm05. without mods. :confused:
i've tried some PSU but it was the same.

Dirt

12-27-2004, 04:16 AM

Realy? Hmm might be some changes from AGP to PCI-E version then. I havn´t recived my card yet so I cant tell.

Is the 6800U clocked higher in PCI-E than AGP just like my ordered XFX 6800GT ???

misteroadster

12-27-2004, 04:17 AM

no, 425/1100 3D stock.
400/1100 2D.

Dirt

12-27-2004, 04:20 AM

Okey, my card is 400//1000 thats quite ok. My old one (AGP) did 460//1208 as maximum.

Just waiting for DFI nForce4 SLI now.

[XC] moddolicous

12-27-2004, 08:01 AM

hello moddolicous, can you do the same for 6800U PCI-e with 510/630 and 1,6v ?

Misteroadster, the highest voltage I could do was 1.5, so its up to you if you want to use this bios. I set the voltage to 1.5, and made the clocks 510/630(1260). Make sure you have good ram cooling.

misteroadster

12-27-2004, 10:53 AM

thank you very much moddolicous , i will give you the results soon ;)

matt9669

12-27-2004, 11:10 AM

Dirt

12-27-2004, 12:43 PM

matt9669: Read this thread it was created for bios editing of the AGP version of 6800GT/U cards but will probably apply to PCI-E versions to.

http://xtremesystems.org/forums/showthread.php?t=36541

[XC] moddolicous

12-27-2004, 01:31 PM

moddolicous - there isn't a utility out for editing these BIOS'es? I'm surprised - seems somebody could write a down-and-dirty little utility to modify the hex values as needed - I could write a little C/C++ proggie perhaps . . .

In any case, do you have a link on doing these BIOS mods? I have no problems editing hex code, and I'll soon have 2x BFG 6800GT OC PCIe's that will need to have their clockspeeds upped :D so I thought I'd get into doing this. Thanks for your help!

:toast:

You could use Nibitor. Its like a do-it-yourself type bios editor. I prefer the hex mode, but thats what most people do. Here's a link so you can try it.

http://www.mvktech.net/index.php?option=com_remository&Itemid=26&func=selectfolder&filecatid=6

misteroadster

12-28-2004, 03:48 AM

hello moddolicous , i tried to flash with your modded bios but the size don't match with the original bios , yours :61K , original 63K :(
I couldn't flash.

Dirt

12-28-2004, 03:51 AM

Is it realy a PCI-E bios then??

Skip

12-28-2004, 04:03 AM

what you should do dirt, is first get your rig setup, then just create a backup of your bios using nvflash. then give that file to someone. or download nibitor and edit that bios to your liking, then flash your card with that bios.

Dirt

12-28-2004, 05:07 AM

Skip: Yes of cause I know that is the optimum way. But since people in the US seem to get Hardware faster then us in Sweden I thought it would be kinda sweet to have it waiting when I get the card if you know what I meen ;)

Dirt

12-28-2004, 06:47 AM

Pheww decided to give Hex Workshop a shot.

I compared with some 6800U AGP editing done in this thread:

http://xtremesystems.org/forums/showthread.php?t=36541

http://img6.exs.cx/img6/8830/oc6800.gif

If I understood everything right this is the correct values for moddolicous 6800GT PCI-E BIOS with values changed to 1.4volts @ 2D + 2D/3D + 3D and 450core and 600mem. Correct??

http://www.knasboll.se/img/HexWorkshop%206800GT.jpg

Well it looks like sh*t I know :toast:

[XC] moddolicous

12-28-2004, 06:49 AM

hello moddolicous , i tried to flash with your modded bios but the size don't match with the original bios , yours :61K , original 63K :(
I couldn't flash.

The one I have from a different 6800U is only 61kb. Can u use savebios or nvflash to get me a copy of the bios.

Dirt

12-28-2004, 06:55 AM

[XC] moddolicous

12-28-2004, 05:01 PM

moddolicous: Can you please take a quick look at my post above and tell me if I got it right?

Misteroadster: What flash device did you use?? nvflash 4.42 works with the command -p -u y to ignore different vendor and PCI device! It might work despite the change in size.

That looks correct, although that is mostly for the 6800 series. It changes on other nvidia bioses. Just to say, the max voltage through bios is 1.5.

Dirt

12-29-2004, 01:43 AM

That looks correct, although that is mostly for the 6800 series. It changes on other nvidia bioses. Just to say, the max voltage through bios is 1.5.

Yes I know that there is one other option 03 = 1,5volt but is that possible to apply to a 6800GT?? I heard som talking about you only beeing able to increase by 0,1v. Original 3D said to be 1,3v

Strangely i looked in to a 6800GT original bios yesterday and the 3D was set to 01!!! That would meen 1,4v original?! Can i just smash 1.5v to 2D + 2D/3D + 3D ???

Trader88

12-29-2004, 02:11 AM

[XC] moddolicous

12-29-2004, 05:44 AM

Yes I know that there is one other option 03 = 1,5volt but is that possible to apply to a 6800GT?? I heard som talking about you only beeing able to increase by 0,1v. Original 3D said to be 1,3v

Strangely i looked in to a 6800GT original bios yesterday and the 3D was set to 01!!! That would meen 1,4v original?! Can i just smash 1.5v to 2D + 2D/3D + 3D ???

You are able to use 03 to equal 1.5 on the 6800GT, but it hasn't worked if you have the extra pipelines enabled, at least for me.

[XC] moddolicous

12-29-2004, 05:46 AM

Hi moddolicous,

Perhaps this is a silly question but just wondering if there is anyway to mod the bios to support "Dual Link DVI" or resolution up to 2560 x 1600, for use with Apple's 30" LCD.

Many Thanks

I dont think there is a way for it to support 30 inch screeens, but you could use powerstrip and create your own resolution. Since the macs also use 6800's, it should work.

Dirt

12-29-2004, 06:26 AM

You are able to use 03 to equal 1.5 on the 6800GT, but it hasn't worked if you have the extra pipelines enabled, at least for me.

Extra pipelines?? My 6800GT have as many pipes as an 6800Ultra doesnt yours? Or do the core have additional pipes not even opened at the 6800Ultras???

[XC] moddolicous

12-29-2004, 06:30 AM

The 6800 Ultra comes with 16 pipelines unlocked. As far as I know, some or all of the 6800GT's come with 12, but you can do a bios flash to open them all. You got a good one if all were unlocked.

Dirt

12-29-2004, 06:32 AM

Well that might differ depending on market in that case. My 6800GT 256Mb have 16pipes stock and all of my friends cards too.

matt9669

12-29-2004, 05:30 PM

By definition a 6800GT has 16 pipelines, no modding required. If yours does not, talk to the vendor, you got screwed . . .

Sampsa

12-30-2004, 02:09 AM

Any one here have idea how to flash PCIe 6800 Ultra BIOS to PCIe 6800 GT? nvFlash 5.08 complains about Board ID mismatch (GT vs Ultra) and older versions of nvFlash doesn't support PCIe cards.

Dirt

12-30-2004, 02:12 AM

Any one here have idea how to flash PCIe 6800 Ultra BIOS to PCIe 6800 GT? nvFlash 5.08 complains about Board ID mismatch (GT vs Ultra) and older versions of nvFlash doesn't support PCIe cards.

Holy crap! didnt know about that problem with old nvFlash and PCIe cards. :cord:

But on the other hand you wont gain anything by flashing to a ultra bios compared to a modded GT bios. We can fix it for you if yoy just upload your BIOS. Need to know what default core and mem you would like.

Sampsa

12-30-2004, 01:42 PM

I'm not sure but the CAS latency for memory is 8 in Ultra and 7 in GT. With Ultra's BIOS memory should overclock higher.

I'm thinking of modifying the boards so that they recognize as Ultras and then I can flash Ultra bios :)

matt9669

12-30-2004, 01:47 PM

Didn't know that about the CAS latency, that's interesting.

moddiculous, do you think you could just write a 6800GT bios with a CL of 8? That would bypass the Ultra recognition problem . . .

I'm keeping track of this thread, it will all become more interesting when I get my BFG 6800GT OC PCIe's :D

[XC] moddolicous

12-30-2004, 02:44 PM

I'll try, I never did anything with cas timings on an Nvidia. I did it on an older radeon card, and it worked. Let me try this. It should work.

edit: Just tried and nvflash wouldn't let me. It came up with a board mismatch error. I'm not sure why, but I will try to figure it out.

matt9669

12-30-2004, 07:18 PM

Interesting, think maybe the device ID is tied to the CL? (Could be nVidia's way of speed binning the Ultra . . .) Too bad lower CL typically does nothing for graphics cards.

nvflash 4.42 works with the command -p -u y to ignore different vendor and PCI device! It might work despite the change in size.

Have you tried using those flags to flash a 6800U BIOS Sampsa? I'm interested to see if this works to get more speed out of a 6800GT! ;)

Sampsa

12-31-2004, 05:35 AM

Have you tried using those flags to flash a 6800U BIOS Sampsa? I'm interested to see if this works to get more speed out of a 6800GT! ;)

Like I said earlier, older versions of nvflash (4.42 or 4.41) don't recognize PCIe Geforce 6800 GT graphics card at all!

Dirt

01-02-2005, 12:32 PM

Here you can find the only thing you´ll ever need to mod your 6800 BIOS AGP or PCI-E doesn´t matter:

http://www.mvktech.net/index.php?option=com_remository&Itemid=26&func=fileinfo&parent=folder&filecatid=712

humeyboy

01-10-2005, 06:19 AM

HMM, i dont see how other thread was closed with comment " kinda dead here or words similar" cause its same here, more peeps will need help there as we not all ready to go pci E yes cause pci E for me means amd64 and only NF4 has that so far, so its to immature and i will wait on later rev of mobos with better bios/drivers as now its slow compaired to Via.

So help the peeps with agp Nvidias :D

Mavke

01-11-2005, 04:04 AM

For those who want mod their BIOS AGP or PCIE, then you better get NiBiTor from http://www.mvktech.net. You can modify your BIOS with that tool. One thing however the development is based on if we get more BIOS's... So the more BIOS's we receive the more development we do on supporting all cards. So make a backup of your Graphics card BIOS and mail it to me (mavke@mvktech.net (mailto:mavke@mvktech.net)).

How to make a backup?
NVIDIA GeForce BIOS Backup Guide (http://www.mvktech.net/content/view/14/37)

Regards,
Mavke

[G.N.U.]Fragman

01-13-2005, 03:03 PM

The 6800 Ultra comes with 16 pipelines unlocked. As far as I know, some or all of the 6800GT's come with 12, but you can do a bios flash to open them all. You got a good one if all were unlocked.

wrong....gf6800 has 12 open...only difference between GT and Ultra is RAM (GT 2,0 ns, ultra 1.6ns) and ultra got more power to ram and 2 power cords......nothing else...

humeyboy

01-14-2005, 06:52 AM

The part on ram for GT, nvidia leave it open to makers of cards but it must be at least 2.0ns, some are 1.6 ns same as ultra hense 600mhz modules from samsung that do 1200ddr, they just missed out when N40 was new on the new samsung 1.2ns modules at 800mhz so 1600ddr :)