How to Modify Your HD2900 BIOS Clock Frequencies by Hex File

[ZeRo4u]

i just tried to mod my 2d, so now i am on 399/405 instead of 507/513 but i tried to modify voltages too, so my lines now seem this: DC 9B 00 34 9E 00 84 03
399 / 405 / 900 (0.9V) but rivatuner is stil reading 1V, first i tried 0.95 then i thinked its too small to be seen but either 0.9v isnt working, so can be voltages regulated at other place ?
i just not tested 3d voltages yet...

edit: i unpluged 2 ground cables from 8pin so now its only 6pin conected, so there isnt active overdrive in CCC, so now 0.9V for 2d normally works which is good... so there had to be only 6pin in 8pin cause other hand it seems that if overdrive is active CCC is controling voltages and 3d speeds more than bios...

What planet do you come from?

here some bios tools: http://www.tinyurl.com/37t2h3

[roger_h99.nor]

@ZeRo4u
If you had taken the time to actually read mossad's post you would have noticed that he owns a 2900GT.

[mossad]

actualy 2900 gt PCB with R600 320 stream core , which is super imba hybrid, now i can say, card has only 1 8pin, so there must be only 1 6pin conetor to have overdrive in CCC disabled, then all bios modifications are visible, if there is 8pin CCC overdrive bios settings... so roger, your table works great
now i am on 0.9V 2d 399/405 and 1.15V 3d 750/950 instead of 1V 506/513 2d and 1.08V 600/800 3d... 750/950 couse it was max stable with 1.08v, now i got tested that 800/1000 is stable, 830/1000 isnt, but now i got only stock cooler so there is not so many room to oc and i am happy with what i got ...

[ZenEffect]

anyone else having problems with catalyst 7.12 and modded bios in cf? i had to downgrade back to 7.11 because i get a black screen with the new drivers

[ZenEffect]

i see a bunch of 1.25 volt bios'... but i could swear that mine stock is 1.15... raising up to 1.2 yeilds 860/999 100% stable on both cards

mabye i just got 2 good samples iduno.

[TouGe]

anyone else having problems with catalyst 7.12 and modded bios in cf? i had to downgrade back to 7.11 because i get a black screen with the new drivers

Yeah, I had issues w/ the new drivers as well. Actually, my problems where w/ CCC.
After just installing the driver and ATi Tray tool all my corruption issues were gone.

[Truckchase!]

With the modded BIOS and the new 7.12 drivers my card won't go into 3d mode; it just stays at 2d clocks and voltages. Just installing the driver without CCC doesn't help. I'm looking for a solution, but haven't found one as of yet.

Anyone else with issues?

[ZenEffect]

im having issues with the 7.12 drivers as well. i dont have time to come up with a fix at the moment as im busy trying to get my q6600 to 4ghz

mabye in a few days ill post back with a fix if i can get it working.