Vmod 3850 through BIOS apparently IS possible....

[CapFTP]

Ok folks, I think our HexEdit and checksum correction days are finally over. I came across this thread (german anyone?):

http://www.computerbase.de/forum/sho...d.php?t=372893

And here is the link to the ATI 85xx BIOS editor:
http://www.aledander.de/vb/ati_bios_...tibiosedit.zip

Change whatever frequency/voltage you want in a breeze. Could anyone test it to make sure it works? I'm a bit busy right now...

Enjoy!

coool......hope someone can test it...

ps. tried to open a 3870x2 file...is not allowed....i hope soon there'll be an update

[lowtcell]

I just tried the app. Did not flash with new bios until I can confirm the checksum, etc.
I used the HIS 3850/512 bios file that I'm currently running on my Sapphire.

There is an error in the Voltage dropdown. Instead of a dot, it is a comma (1,327 and not 1.327) and saved bios file gave an error on opening. If you type the value manually, it seems to save correctly and opens the file with set values.

EDIT
Just noticed at the bottom of the app window is a checksum display. Both the stock BIOS and the modified show value of 7500

EDIT AGAIN
Just ran this on a Sapphire bios I have on here, and noticed on the bottom of window that there is a checksum correction taking place when the file is saved.

I'm not at home now, so I can't try flashing just now.

[chp]

I tryed several bioses versions to use on my PowerColor (All working) and Connect3D (more problematic). But none of them allowed me to go further than 762Mhz event with VGPU set to 1.37V

Perhaps, depending on the manufacturer, some HD3850 VGPU can be changed within the bios others not.

Other testings: I tryed also different revisons (065, 067, 070, 071 and 073).
The one giving the best score in 3DM06 is the 073 followed by the 064 and the worst is the 071. (Testings made on PowerColor and Connect3D)

The differences sometimes are huge....