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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
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.
did you forget to link to the bios, or did i just overlook it? heh.
thanks a lot btw :D
Sorry, not very smart. :am:
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*
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*
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.
hi and thanksQuote:
Originally Posted by moddolicous
any way you can make 1 with 1,6 ?
i am now running on h20 :)
Quote:
Originally Posted by Dromedary
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/show...95&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.
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 !Quote:
Originally Posted by Dromedary
i potted the psu out, it doesn't seem to have had an affect on it
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.
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?
So, does it work now?Quote:
Originally Posted by Dromedary
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.Quote:
Originally Posted by kappa2001
http://downloads.guru3d.com/download.php?det=1118
It works great :) nVidia Bios Modifier v1.1
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.
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.
My XFX 6800U/512MB before bios mod, default voltage 1.43v Max freguency was 469MHz and now 1.53v max is 488MHz watercooled..
Did you try higher GPU voltages ?
@ 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???
done done and done, my bios is at MaXit
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
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Rename the .zip to .bin only
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.
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