Vmod 3850 through BIOS apparently IS possible....

[Bo_Fox]

Can you please point at the post that he posted that BIOS, i'll compare it to the original and try to figure out the differences, cause i also want to know how to get Overdrive to work with a modded BIOS!

I think it is due to the voltage-lookup tables that ATI uses with the 38xx series (that's why voltage cannot be changed as easily in software like with X19xx series). I heard that when overclocking, Overdrive slightly bumps the voltage by miniscule amounts that hardly help at all, like by 0.005v increments or something like that (cant remember where I got the info..). For all 3850 cards, there is a specific voltage to be expected by the drivers and if they do not match, it wont work, as I have recently confirmed.

However, Rivatuner still works with overclocking, which is a big .

With HIS default bios, CCC allows me to slide it all the way to 900 MHz core and insane memory speeds. So here it is again, with a different filename this time.. It "should" be overclockable using CCC since this bios is default and unchanged. Also, the official speed in the hex editor is 736/982, not 735/980.

Description:
HIS Radeon HD 3850 IceQ3 TurboX 512MB 736/982 default clocks
ATI's CCC sliders maximum of 900MHz core and 1100 MHz memory
DEFAULT BIOS