Any modders game for 6800U bios?

[humeyboy]

You would be better of using the modded GT bios, it gets you 300points increase in 3d mark 2005 at same clocks as default Ultra as it has tighter ram timings, i have this bios and have modded to 1.6v and have no issues of heat, at 465/1225mhz, if your gonna o/c slap some artic silver or ceramic on core/ram and volts mosfets.

I can make your bios 1.6v but not 1.5v as tool dont support or i can give you the modded GT bios with 1.6v,you card will be seen as a GT in windows until you tell rivatuner to rename it to a ultra this requires unistalling/reinstalling driver as we technically are changing card.

Its a 5min job at your end and worth it even if you didnt overclock or raise volts the GT timings gain you a good jump for FREE.

[Apocalipsis]

Nice, if you can plz, mod my bios to 1.6v and also send me the GT modded too to 1.6v, I will try both.

That GT bios is PCI-E right?

[[XC] moddolicous]

The file u saved is wrong. If u can, use savebios, and then post it here. BTW, is there anything in particular u want me to do? Up voltage, I know, and what else? (raise clocks)

[humeyboy]

NO Sorry im talking plain agp8x cards, i not using PCI-E.

[Tulatin]

Got a reference 6800GT here, wondering if most bioses are compatible with it, or if i should just toss you guys the bios included on it?

[Apocalipsis]

The file u saved is wrong. If u can, use savebios, and then post it here. BTW, is there anything in particular u want me to do? Up voltage, I know, and what else? (raise clocks)


Wrong? Just rename it to .rom , I've saved it with nvflash.

Upping voltage is enough.

[Apocalipsis]

mmmm, where can I download savebios guys?

[[XC] moddolicous]

Wrong? Just rename it to .rom , I've saved it with nvflash.

Upping voltage is enough.
Thanks, forgot about that. Just up voltage, ok.

[[XC] moddolicous]

Here is your bios. The highest I could go way 1.5, cause the 1.6 one doesnt work. Try this and tell me if it works.

[drcrawn]

Hmm, I see some of you guys running like 475mhz with 1.5v and my question is couldnt the card hit that with 1.4v? Mine does 513mhz on 1.4v. 1.5v was totally worthless for 24/7 use for my card, all it did was raise my temps 10c. These 6800 want colder temps way before they want more voltage.

[humeyboy]

You obv wanting to o/c card, well here is a FREE 300 point gain for me at same clocks b4 i o/c it, just by a sinple bios flash.

http://forums.anandtech.com/messageview.aspx?catid=31&threadid=1504129&enterthread=y

http://www.bleedinedge.com/forum/showthread.php?t=7215

http://www.bleedinedge.com/guides/vid_bios_mod/vid_bios_mod_01.html

PLEASE at least look at bottom 2 links to understand, you wont have to read all the forums pages its to much.

[Apocalipsis]

Here is your bios. The highest I could go way 1.5, cause the 1.6 one doesnt work. Try this and tell me if it works.

Nice !! My benching rig is at job so I will try it on monday (600+ core here we go :eek: )

Now I'm searching for a Gainward GT pci-e bios, I will send it to you too for higher voltage ok?

Thanks for your work moddolicous ;)

PD: How do you know that 1.6v doesn't work?

[Apocalipsis]

Hmm, I see some of you guys running like 475mhz with 1.5v and my question is couldnt the card hit that with 1.4v? Mine does 513mhz on 1.4v. 1.5v was totally worthless for 24/7 use for my card, all it did was raise my temps 10c. These 6800 want colder temps way before they want more voltage.

wow man, 513 with 1.4v sounds nice, what cooling are you using?

[[XC] moddolicous]

Nice !! My benching rig is at job so I will try it on monday (600+ core here we go :eek: )

Now I'm searching for a Gainward GT pci-e bios, I will send it to you too for higher voltage ok?

Thanks for your work moddolicous ;)

PD: How do you know that 1.6v doesn't work?
I tried in hex editor to type the code for 1.6 on my card, and it didnt work. It works on some 6600gt, though.

[nicepun]

Could someone please mod this bios (BFG 6800Ultra OC AGP) to be 1.5v. Thanks.

[[XC] moddolicous]

Could someone please mod this bios (BFG 6800Ultra OC AGP) to be 1.5v. Thanks.
If thats all u need, I dont mind doing it. Make sure u have good cooling though, cause this will bring temps a lot higher if you are using stock.

[[XC] moddolicous]

Here's the bios. It is modded to 1.5v.

[Tulatin]

6800GT PCI-E, reference model. Could you please set voltage to 1.5+ (1.6 if possible, thanks :))

[nicepun]

moddolicous,

Thanks, don't worry, I'm watercooled!!!

[[XC] moddolicous]

6800GT PCI-E, reference model. Could you please set voltage to 1.5+ (1.6 if possible, thanks :))
I need to know a make. Is there anything else that u want me to do while I'm at it?

[Tulatin]

It's a card straight from NVidia themselves. What else can be done in there - as to clocks, leave them be.

[[XC] moddolicous]

It's a card straight from NVidia themselves. What else can be done in there - as to clocks, leave them be.
Alrite. How did u get that?? Theres not that much I can do, but I'll try. The bios is arranged in a different way then most of the other ones.

[Tulatin]

How did i get it? I asked for it :).

[[XC] moddolicous]

Nice !! My benching rig is at job so I will try it on monday (600+ core here we go :eek: )

Now I'm searching for a Gainward GT pci-e bios, I will send it to you too for higher voltage ok?

Thanks for your work moddolicous ;)

PD: How do you know that 1.6v doesn't work?
Did it work?? Any results to share with us.

[paakkis]

XFX GeForce 6800 Ultra/512Mt Could someone set voltage to 1.5v bios (http://koti.mbnet.fi/paakkis/BACKUP.ROM), thanks.
Hmm so it looks like this (http://www.vr-zone.com.sg/?i=2227&s=1) is the only way what can be done! no bios mods?

[Dromedary]

i backed up my bios, and would like the voltage to be modded to a 1.5core if you wouldn't mind... and if the memory can be increased as well within the bios, that would be cool too, heh.

(this is an eVGA 6800gt agp)

anyway, thanks a lot if someone will mod it for me :D

http://www.linuxbench.org/eVGA_6800gt_bios_backup.bin

edit: i've heard a couple of stories about the 1.6 volt, as in some say it works and some say it doesn't. if it can work, i would like 1.6 volts since i'm on water cooling

[[XC] moddolicous]

It looks like 1.6 may work on evga, because I tried it for someone here before, and it worked. For some other reason, it wont work on others. Here's your bios. Report back here once your done. And no, mem voltage isnt controlled through bios.

[Dromedary]

did you forget to link to the bios, or did i just overlook it? heh.

thanks a lot btw :D

[[XC] moddolicous]

Sorry, not very smart. :am:

[Dromedary]

lol, no prob, i've forgotten to attach files countless times...

i don't think my card is liking this bios, i tried overclocking to 450 (already obtainable by my card without mods) and it passed the little test coolbits does, then i tried 475 and the screen got slightly disfigured (all in the while mem at 1ghz default clock) then said it failed the test, i tried to test it at 450 again and no dice, tried at 425 and no dice. it does fine after a reboot, so i'm sure there's no damage, but maybe the 1.6 didn't work *shrugs*

[Dromedary]

alright, i did some testing, and what i came up with was indeed very weird and unexpected... anyway, here goes:

(all tests done at default clocks)

default bios

2d: 1.331
3d: 1.325
idle: 42C
load: 45C


1.6v modded bios

2d: 1.530
3d: 1.524
idle: 42C
load: 46C

using gtu bios from http://www.bleedinedge.com/forum/showthread.php?t=7215 (supposedly only mods your bios to make your core 1.5v)

2d: 1.130
3d: 1.425
idle: 41C
load: 48C

is this normal? maybe the spot where i'm measuring it has a little bit of resistance in the solder throwing the readings off or something, i dunno. i read it from the spot shown in the first picture here: http://www.vr-zone.com/?i=926&s=1

i seem to get the best overclocking ability from the gtu bios, stock does 450 but with some minor artifacting. with the gtu version it takes away the [very] minor artifacting, but i can't seem to go any higher without artifacts, and it straight up crashes when i try 475, although it passes the initial test in coolbits. your 1.6v version for some reason crashes when i try the test at 475mhz.

i may try more, but all of this has me a little scared, i hope the card can handle it. it can certainly handle it as far as temps are concerned, as you can tell lol.

what has me worried is the volts aren't what they are supposed to be in any case (1.5 is actually 1.425, 1.6 is actually 1.524, 1.4 is actually 1.325) -- this might be normal though *shrugs*

[Dromedary]

i seem to be hitting a barrier of some sort at 450. i could do 450 core on my original bios with no mods, but i had very mild artifacting. with the gtu bios it seems to get rid of all artifacting, but if i try to go any higher i get artifacts (pretty bad ones too). with yours, it goes to 450 just fine, but if i try and do the little coolbits test at anything over 450 (even 455) it will artifact the screen then report that the test failed.

i wonder what might be causing this :confused:. one thing i do think i should try is trimming my pots for my 12v line, my 12v line is actually slightly over 12v, which i was thinking might cause a problem (it's ~12.13). it's a fortron blue storm, so it has voltage pots, i just didn't want to mess with the defaults.

oh well, sorry for posting so much lol. i'll report back i guess if i can find a way around this.

[DEVIL_DK]

DEVIL DK, try this bios. I just raised voltages to 1.5v. (stock=1.4)

hi and thanks
any way you can make 1 with 1,6 ?
i am now running on h20 :)

[jimmor]

what has me worried is the volts aren't what they are supposed to be in any case (1.5 is actually 1.425, 1.6 is actually 1.524, 1.4 is actually 1.325) -- this might be normal though *shrugs*


The gpu volts range for the standard design 6800gt and Ultra cards is 1.1, 1.3, 1.4 or 1.5. And it is achieved by having all or a mixture of the following four bit binary strings in the structure of bios's GPU Volts Lookup Table,

6E00 = 1.1
8202 = 1.3
8C01 = 1.4
9603 = 1.5

Any bioses out there which don't adhere to these structured options were moded by people who either, didn't understand gpu volts selection and operation on 6800 cards, or, were using older versions of OmniExtremEdit or NiBiTor programs.

The volts you get is hardwired into the card, and is set by the driver using the last two bits (00, 01, 02 or 03) of the four bit volts option string. And the actual volts that gets selected is dependant only on which Performance Level Volts Indicator value is stored in a particular modes performance table.

If you want a better understanding on GPU lookup table structures and how a driver uses them, read the GPU Volts section of the 59xxx bios modding guide linked below. Even although the volts values may differ, the operation of the gpu volts lookup tables of 59xxx and 68xxx bioses is the same.

http://www.nvnews.net/vbulletin/showpost.php?p=330195&postcount=1

And the fact that for example your 1.4v setting may actually measure as 1.42 is completely down to tollerencies of components on your particular card.

[jimmor]

i wonder what might be causing this :confused:. one thing i do think i should try is trimming my pots for my 12v line, my 12v line is actually slightly over 12v, which i was thinking might cause a problem (it's ~12.13). it's a fortron blue storm, so it has voltage pots, i just didn't want to mess with the defaults.


The 12v line only needs to be kept within plus or minus 5% of its nominal value, which means a max level of 12.6v !

[Dromedary]

i potted the psu out, it doesn't seem to have had an affect on it

[Dromedary]

lol, sorry once again for posting. i was getting very worried that i had fubar'd my card when every time i started 3dmark01se it would hard lock the comp with a random garbage screen (one exactly like when i tried the coolbits test at over 450core).... so then i changed my volt pots, actually increasing them a little bit more than default. the problems presisted, then i decided to go at my memory since i couldn't do much with my core, so i was running 3dmark03 and it was doing so-so at 450/1.25, a small bit of artifacting though (memory artifacts, i believe all core artifacts are gone). for some reason i decided to let the test go all the way, lol. it got to the sound test and it ran fine first run (no sound). second run, the same core problem where it garbles the screen with crap. i realized then immediately what was going on, lol. every time directx initializes the sound (notice i can play sounds with no probs not initialized by d3d, and i can play sounds while running 3dmark with no probs) it crashes the card. i think this is actually a directx issue, because i don't think i properly updated to directx9...

this makes me oh-so-happy, because that was my problem from the beginning basically. i am going to do a driver cleaner on my sound card and video card drivers, then reinstall directx the latest version and reinstall them. i think this will give me some good results, because it seems to explain my problems very well, lol.

anyway, just letting people know incase you come across this too.

edit: i believe i installed my audigy 2 zs drivers before i installed directx9 and forgot about installing dx9 all together, and the audigy drivers patch up a lot of dx. i think i installed dx9 later, but it over-wrote what the audigy drivers should have patched making it no longer work.

[kappa2001]

Hey guys, i have leadtek 6800nu with 128mb of ram.
Could you guys tell me how much voltage would a card like this take on stock cooling?

Also, how do i save the bios to a file?

[[XC] moddolicous]

lol, sorry once again for posting. i was getting very worried that i had fubar'd my card when every time i started 3dmark01se it would hard lock the comp with a random garbage screen (one exactly like when i tried the coolbits test at over 450core).... so then i changed my volt pots, actually increasing them a little bit more than default. the problems presisted, then i decided to go at my memory since i couldn't do much with my core, so i was running 3dmark03 and it was doing so-so at 450/1.25, a small bit of artifacting though (memory artifacts, i believe all core artifacts are gone). for some reason i decided to let the test go all the way, lol. it got to the sound test and it ran fine first run (no sound). second run, the same core problem where it garbles the screen with crap. i realized then immediately what was going on, lol. every time directx initializes the sound (notice i can play sounds with no probs not initialized by d3d, and i can play sounds while running 3dmark with no probs) it crashes the card. i think this is actually a directx issue, because i don't think i properly updated to directx9...

this makes me oh-so-happy, because that was my problem from the beginning basically. i am going to do a driver cleaner on my sound card and video card drivers, then reinstall directx the latest version and reinstall them. i think this will give me some good results, because it seems to explain my problems very well, lol.

anyway, just letting people know incase you come across this too.

edit: i believe i installed my audigy 2 zs drivers before i installed directx9 and forgot about installing dx9 all together, and the audigy drivers patch up a lot of dx. i think i installed dx9 later, but it over-wrote what the audigy drivers should have patched making it no longer work.
So, does it work now?

[[XC] moddolicous]

Hey guys, i have leadtek 6800nu with 128mb of ram.
Could you guys tell me how much voltage would a card like this take on stock cooling?

Also, how do i save the bios to a file?
I think 1.4v on stock cooling is OK, and anything higher will make it very hot. If u want, I'll make 2 bios, one 1.4v, and one 1.5v. U can try them, and if the 1.5 is too hot, u can flash to the 1.4v. I would recommend just using the 1.4 though. U can save a bios to a file by either finding it on mkvtech.net or using savebios.

[paakkis]

http://downloads.guru3d.com/download.php?det=1118
It works great :) nVidia Bios Modifier v1.1

[overclock]

Moddolicous,

How did you manage to choose 1.6 V in your modded bios ? Indeed, when I use tools like Nibitor, I cannot more attribute more than 1.5 V.

Do you use another tool or do you directly modify the bios with a hexadecimal editor ?

Indeed, I would like to attribute 1.6 V for my Leadtek 6800 Ultra and for my future 7800 GTX. They will be watercooled, so there shouldn't be any problem.

[overclock]

Sorry for the previous question, I found the bios editor on guru site, by clicking paakis'link.

My 6800 Ultra was already flashed with 1.5 V. With this editor, I applied 1.55 V.

Then I checked the maximum GPU frequency and...no change ! It is always 487 -490 Mhz.

It seems that 1.5 V is the maximum for my 6800 Ultra.

Another information : a few months ago, I had followed advice given in VR-Zone forum and I had soldered a resistor on my Gainward 2600 Golden Sample (6800 Ultra) AGP which damaged it : normally GPU voltage had to be 1.7 V. So 1.6 V should be the highest voltage to apply. And, according to my test, 1.5 V is enough, more volts won't improve performance.

[paakkis]

My XFX 6800U/512MB before bios mod, default voltage 1.43v Max freguency was 469MHz and now 1.53v max is 488MHz watercooled..

[overclock]

Did you try higher GPU voltages ?

[wittekakker]

@ Apocalipsis: when I read this thread I see everybody complaining about the card throtling below 25°C. How the hell did u get your card do some 3d marks with dry ice on it's head???

[Ket]

done done and done, my bios is at MaXit (http://www.maxitmag.co.uk/forum/showthread.php?p=9198#post9198)

[Janne82]

Hi everyone!
Did some unsuccesful modifying on my BIOS with Nibitor trying to raise my volts +0.1v and it gave me less overclockability. Artifacting / crash at 350Mhz. So now I was wondering if someone else could do a better job for me?? I want the volt to go up +0.1v for 3D Mode. I'm uploading my original BIOS for you to have a look at. Thanks

----

Rename the .zip to .bin only

[Vitality]

Hi guys!
I didnt have enough time to read this whole thread at the moment, but im wondering that is it really possible to increase voltage only with new bios? :O
If so, can someone be so nice to teach what to do, or mod my bios? Card is MSI 6800 Gt. How much does it seems to improve oc:ing with little voltage increasing, while still using aircooling (VF700Cu)?
I have to go work now, and maybe at evening i have better time to search information by myself, but still im pretty sure i can't handle this only by myself... So little help could be nice.

[Ludus]

hi to all.

i need help for my xfx 6800gt.

yesterday i try to bech under my single phase at -35 about in full load with my xfx 6800gt. the card go very well, i can reach 630mhz for core and 1400mhz (and more, the pcb is at 3-4°) for ram but also at default frequency i can't do a 3dmark :( i think that is a problem of cold bug.

who have a bios mod for my xfx 6800gt that i can use under -35 °C?

thank you

[wittekakker]

Hey Ludus,
I had same question a few months back. There is no bios mod until now. Only way to bench those cards is like this:

Hey Shamino,
I PM you about your 6800GT adventure. I red u were having problems with throthling below 25°C. But there still isn't any solution at this moment. U got a way around this problem but I didn't completely understand how u did this, can u explain me again please? I might be waterchilling my GT next month.

And what about your SLI run... When I red the 6800GT's SLI threath I saw noboddy complaining about the throthling. Doesn't throthle work when SLI?

O yea, before I forget: thanks for the Vmods. They are very usefull!

greetings,
wittekakker

hi for 68gt throttles, boot up with warm gpus, go into windows, don't open any nvidia apps, open rivatuner, turn on cooler, let gpus go down to temps and click o/c speed. close and run 3d app. if there's throttlin, reboot. when u enter windows, there will be 2 scenarios, 1 the windows slow down = throttle. so u need to reboot and there will be one boot thats throttlefree.
2 throttle free. then you just oc the speed and close any nvidia or rivatuner apps. run 3d w/o throttle it will stay until u reboot.

[fareastgq]

Hi guys, I just got a 6800gt Evga pci-e , someone want to send me a modded bios for volt options? core will go under water, ram will be sinked, runs oc'd with coolbits forceware right now 401/1.09 (sucks I know). so... trying to get more out of it. I don't know what good volts for the gpu/ram is.. so... mod away, I have no idea how to do it, I'd like to learn sooner or later, just too busy right now and don't wanna f it up. is 600/1300 too much to ask? hehe. thanks in advance.

[alexio]

Hi guys, I just got a 6800gt Evga pci-e , someone want to send me a modded bios for volt options? core will go under water, ram will be sinked, runs oc'd with coolbits forceware right now 401/1.09 (sucks I know). so... trying to get more out of it. I don't know what good volts for the gpu/ram is.. so... mod away, I have no idea how to do it, I'd like to learn sooner or later, just too busy right now and don't wanna f it up. is 600/1300 too much to ask? hehe. thanks in advance.

Only voltage adjustment for the core is possible with a biosmod. It's 1.3v stock and 1.4v or 1.5v can be selected by a biosmod. 1.4v is 100% safe for 24/7 use, 1.5v is quite safe too if the card has some airflow over the voltage regulators and mofsets.

600mhz core is in no way possible. If the cooling is decent maybe 440mhz at 1.4v and 460mhz at 1.5v, but this really depends per GPU and how good your cooling is.

So what bios would you like, 1.4v or 1.5v, and what clocks?

[fareastgq]

could you send me both bios's? I'd like 1.4/440 and 1.5/460 please. I think it can do it, just needs more volts.... sent to fareastgq@hotmail.com

[humeyboy]

The max you can bios mod volts is 1.55v, even if you set to 1.6v it will be 1.55v with a multimeter in 3D mode, you want that high a core, I doubt you will reach thats on your card but you can do real hardware volts mod, google it, it should come up with VRZONE website, I wont link to it from here anyhow.

BTW , all above is for agp cards, I assume its same for pci-e.

[wittekakker]

Here is the link ;)
http://www.vr-zone.com.sg/?i=926&s=1

[fareastgq]

Here is the link ;)
http://www.vr-zone.com.sg/?i=926&s=1

link for the bios doesn't work :(

[wittekakker]

If u read what's in there u would allready know the answer. It's a link to the hardmod ;)

[fareastgq]

I know, it's not the hard mod I want to do though, just the bios swap ;)

[[XC] moddolicous]

Here are the two bioses (1.5 & 1.4) I left the clocks at 400/500 if thats alright with you.

[burnout21]

hi guys i hear this is the place to find info on 6800's

iv got a XFX 6800 GT AGP all stock, but water cooled. iv read here that you guys mod bios's. now im a noob at GFX modding but keen to learn. could anyone build me a bios or show me how.

i need the Vcore and Vmem increased slightly. i can get 425/1050 out of my card but id like to have a top limit of 500/1200. can you guys help me?