6600gt Bios

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04-05-2005, 10:48 PM
Mavke

Quote:

Originally Posted by te_le_com

Hi, i'm new here, can anyone mod my BIOS to 1.5V please?

Also my BIOS is unoverclockable, don't know how to bypass it? Any ideas?

File attached, thanks a lot

And what card do you have? Cause that would be some valuable info...
04-06-2005, 12:46 AM
te_le_com

I have an engineering sample :banana:

I can't overclock even a MHz as well as underclock, tried coolbit and RivaTuner won't work. It only works if I DisableInternalClockTest in RivaTuner :rolleyes:
04-06-2005, 02:13 AM
Mavke

Quote:

Originally Posted by te_le_com

I have an engineering sample :banana:

I can't overclock even a MHz as well as underclock, tried coolbit and RivaTuner won't work. It only works if I DisableInternalClockTest in RivaTuner :rolleyes:

Oh so it is a engineeing sample of NVIDIA?
04-06-2005, 02:55 AM
jimmor

Quote:

Originally Posted by Nubius

Well if you do extend voltage tables you'll only get lower tables....I figured it was all up the BIOS whether or not nibitor would see the ability to raise the voltage beyond 1.4

I also notice that in the GT bios it jumped from 1.4 to 1.6 but 1.5 wasn't available....why? No clue....I figure it has to do with the card makers limitations or something along those lines, because I've already changed the hex for 1.5 voltages, a couple people have tried it and no hotter temps or better OC, so I assume it simply wont work. It's at it's 'hardware limits' if you well, whereas a GT obviously has a resistor that can handle more voltages, and the BIOS regulates it or something like that

Generally what is programmed into NiBiTor is peoples experiences. Where for example with a 6800GT, the 1.6v NiBiTor option only came about because some cards set for 1.5v were measured as actually having around 1.54-1.56 on the GPU. So it was rounded up ?

And yes you are right, it appears many cards, including some manufacturers GT's, can't cope with anything above 1.4v.
04-06-2005, 02:59 AM
jimmor

Quote:

Originally Posted by te_le_com

I have an engineering sample :banana:

I can't overclock even a MHz as well as underclock, tried coolbit and RivaTuner won't work. It only works if I DisableInternalClockTest in RivaTuner :rolleyes:

Thats exactly the same as happens with my 6800LE. Which is why I posted that you should disable the Internal Clock Test. It is quite "normal" with the newer generation cards.
04-08-2005, 08:40 PM
coop

1 Attachment(s)

I saved my bios file with savebios. I changed the 3D volts from 1.3 to 1.4 and renamed with nibitor. Can I flash the newly named file with savebios? It is the same bios as original except voltage increase. I don't need any switches do I? Just pic the "flash single pci-e/agp card" option, yes? thanks.
04-09-2005, 07:14 AM
jimmor

Quote:

Originally Posted by coop

I saved my bios file with savebios. I changed the 3D volts from 1.3 to 1.4 and renamed with nibitor. Can I flash the newly named file with savebios? It is the same bios as original except voltage increase. I don't need any switches do I? Just pic the "flash single pci-e/agp card" option, yes? thanks.

I have never used SAVEBIOS for flashing bioses. And athough SAVEBIOS can save bios images, there are generally better tools to use.

Bios flashing functions for a 6xxxx series card are normally done as follows,

Flash the bios in DOS using nvflash.exe v5.13

nvflash -r (removes any protection)

nvflash -b ORIGBIOS.ROM (saves original bios)

nvflash -4 -5 -6 BIOSNAME.ROM (flash new bios file)

However because of DOS filename restrictions, "ORIGBIOS.ROM" and "BIOSNAME.ROM" must have max of 8 char's in first part of filename and max of 3 char's in extender part, otherwise DOS will not recognise the command.

And note, the -4 -5 -6 command switches will force a flash regardless of any ID mismatches.

But obviously always make sure you ONLY flash a AGP type card with a supporting AGP bios, and a PCI-E type card with a supporting PCI-E bios !!!!!
04-15-2005, 09:25 AM
mare87

Finally bought a multimeter. On my Leadtek 6600 GT AGP with the modded AND with the original bios multi shows 2D voltage: 1.34v 3D: 1.57v. So there isn`t (yet) a way to have (in the bios) more then 1.4v on the GPU.
04-15-2005, 10:36 AM
jimmor

Quote:

Originally Posted by Nubius

Here ya go dude. I've attached your BIOS file and changed the hex which is supposed to make it 1.5v according to the posts above and throughout this thread. Of course make sure you can unflash if anything goes wrong and I've renamed it so that you can keep the original on the disk too, as a backup, but I changed that one and only option for you like you wanted, so let us know if you can get a higher core clock or if everything goes smoothly.

Hi Nubius,

Just checked the bios you linked, and see that you only changed the Performance Level Indicator Value (PLIV) for 3D mode to "96". And although a PLIV of "96" will normally be interpreted by the driver as wanting 1.5v; setting a value that is not actually used in the gpu volts lookup table can sometimes cause the driver to do strange things.

However, fortunately in this case, the "96" value is higher than anything stored in the gpu volts lookup table, so believe only thing that will happen is the driver will just force gpu volts at max available from the card.

:)
04-15-2005, 10:41 AM
jimmor

Quote:

Originally Posted by mare87

Finally bought a multimeter. On my Leadtek 6600 GT AGP with the modded AND with the original bios multi shows 2D voltage: 1.34v 3D: 1.57v. So there isn`t (yet) a way to have (in the bios) more then 1.4v on the GPU.

Not sure I understand your statement ?

If you are actually measuring 1.57v on the GPU, why would you think that the bios can't set more than 1.4v ?
04-15-2005, 10:42 AM
Nubius

Well if it was in the volt table I wouldn't have had to manually set it in the hex, but this is what leads me to believe that there's possibly a hardware limit on those cards that will completely prevent it from even running 1.5v through the BIOS

The guy who asked for it to be changed, already tried that BIOS, but nothing happened, no temp raise, no better OC'ing, so I guess it's safe to assume it didn't work
04-15-2005, 11:05 AM
jimmor

Quote:

Originally Posted by Nubius

Well if it was in the volt table I wouldn't have had to manually set it in the hex, but this is what leads me to believe that there's possibly a hardware limit on those cards that will completely prevent it from even running 1.5v through the BIOS

The guy who asked for it to be changed, already tried that BIOS, but nothing happened, no temp raise, no better OC'ing, so I guess it's safe to assume it didn't work

The max indicator value in the gpu volts lookup table of that bios is "8C". And assuming your bios mod just changed the 3D mode PLIV from "8C" to "96", then in effect it worked. But as I said, it only worked because the driver simply forced the gpu to max volts. Which in this case just happened to be the same gpu volts as would have occurred with a PLIV of "8C" !
06-08-2005, 07:59 PM
ValkyrieLenneth

After all, is it really effective and anyone got improvement for Ocing from 1.3 -> 1,4v bios mod ? Let's group the results :)
06-10-2005, 12:46 PM
[XC] moddolicous

I think alot of people have had ocing increases. Why else would everyone do it?
07-19-2005, 09:35 AM
DyJohnnY

can anyone tell me if the AMBIENT temperature display in 6600gt cards can be enabled via bios or is it a driver issue?
i've done the temp mod and uploaded the new bios to my chaintech 6600gt, but it only show core temp.
help pls! :(
07-19-2005, 12:57 PM
GOZ

Quote:

Originally Posted by DyJohnnY

can anyone tell me if the AMBIENT temperature display in 6600gt cards can be enabled via bios or is it a driver issue?
i've done the temp mod and uploaded the new bios to my chaintech 6600gt, but it only show core temp.
help pls! :(

Thats all they show is core temp what else do you want???
07-20-2005, 10:35 AM
Pa1n

1 Attachment(s)

Hey moddalicious could u mod my bios I alraedy tried the one from http://mvktech.net/ site rev 2 for my bfg tech 6600gt oc and it was not stable was slow when opening menus for card settings. Stock speeds are 525/1050 I tried opening the bios with nbitor and noticed that under the vender box it reads chaintech but my card is a bfg, anyhow could u mod my bios for more voltage 1.5 would be nice thanx. :woot:
07-20-2005, 11:26 AM
Claritron

1 Attachment(s)

Hi modders :rolleyes:
i'm new on this forum, becouse recently buyed a fake pny 6600 128Mb agp (don't see 64 Bit memory in specs) :mad:
After reading a lot of thread ,trying to mod & flash the bios cards & 15 min of panic (vrong bios in cards) i recovered and installed the original bios bios!!
Now i can ask u to mod my bios? voltage ,remove block if present enable the termal sensor & do all to perform better this card if possible !!

there my info taken from rivatuner (no softmod possible , but i think is normal on my card) :

Graphics core : NV43 revision A2 (8x1,3vp)
Hardwired ID : 0141 (ROM strapped to 0140)
Memory bus : 64-bit
Memory type : DDR (RAM configuration 06)

Memory amount: 131072KB
Core clock : 497.250MHz
Memory clock : 261.000MHz (522.000MHz effective)

now is whit defoult cooler,stable but i think to change !!

i attach my bios version 5.43.02.46.52

ps : original clock is cpu/mem 300/500 mhz

Tnx
07-30-2005, 04:22 AM
njkid32

1 Attachment(s)

Here is my bios could someone mod it so I could have more voltage. Thank you!
07-30-2005, 04:36 AM
Micutzu

You might want to get it again, it has only 60928 bytes instead of 64000 or 64512. All utilities say it's corrupt.
07-30-2005, 09:48 AM
Mavke

Indeed that BIOS is corrupt, did you use nvFlash for making the backup?
07-30-2005, 12:45 PM
ReelMonza

What about undervolting and underclocking ?

Is it safe to set very low clocks and voltages for 2D mode and have stock clocks back in 3D mode ?

I mean running like 100/100 for 2D and then 500/500 for 3D.

I'd really like to cool down my 6600GT and turn fan speed to silent levels.
07-30-2005, 05:00 PM
njkid32

1 Attachment(s)

Quote:

Originally Posted by Micutzu

You might want to get it again, it has only 60928 bytes instead of 64000 or 64512. All utilities say it's corrupt.

Not to sure your talking to me but I used savebios and just created a zip and it compressed to that size here is a second try..
07-30-2005, 10:31 PM
Micutzu

Just use nvflash to get the BIOS ... boot in DOS mode and run:

nvflash --save bios.rom

The file you have attached is too small and is not a complete BIOS file.
But leaving that aside, eVGA's already come with 1.4V for the core, so there's nothing more it can be done, except for a hardware mod of course.
07-30-2005, 10:58 PM
njkid32

Quote:

Originally Posted by Micutzu

Just use nvflash to get the BIOS ... boot in DOS mode and run:

nvflash --save bios.rom

The file you have attached is too small and is not a complete BIOS file.
But leaving that aside, eVGA's already come with 1.4V for the core, so there's nothing more it can be done, except for a hardware mod of course.

Oh ok thank you for your help! I was just trying to get a little more out of this card. But I guess thats it. Thanx!

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