3850 and 3870 moded bios

[guess2098]

3850 still clock lock















3870 is unlock bios












i have few bios in here to download

HD3850
770/975
760/950

HD3870
875/1250
860/1200
830/1200

(UVD clock overclock too)

also the overclock range for 3870 to up to 1500 / 1400

http://www.iax-tech.com/video/3800biosmod/03.htm

[nFo]

Thanks, just what I need.

Works with all 3850/3870 videocards ?

[purecain]

did you up the volts of the gpu/mem, or just up the clocks....?

[guess2098]

it works for all 3850/3870

voltage doesn't change

[tbone8ty]

wow cool.

im definitly seriously considering the 3850 for ultimate bang for the buck performance. especially since the 3870 is like $50-70 bucks for expensive

nice 770mhz!! 100mhz overclock from stock 670mhz.


so the core clock is still locked u say?

[guess2098]

wow cool.

im definitly seriously considering the 3850 for ultimate bang for the buck performance. especially since the 3870 is like $50-70 bucks for expensive

nice 770mhz!! 100mhz overclock from stock 670mhz.


so the core clock is still locked u say?

the max clock before lock up is ~785 i think. cuz 4 of my cards have problem once set on 790mhz. i believe 90% of 3850 no problem to do 770/975 on 24/7.

[AndreYang]

It's the time to sell my 2900XT.

[HousERaT]

nice..... now if we can get some voltage modded bios that work well, we'll be in there.

[guess2098]

nice..... now if we can get some voltage modded bios that work well, we'll be in there.

also 3850 unlock bios

[eXa]

hmm... why is this needed?

[drunkenmaster]

is anyone currently looking at changing the voltage in the bios so we can hit higher clocks? there should obviously be more headroom on a 3870 than a 2900xt that i have, but unless we can bump voltage to actually overclock further than a 2900xt goes then theres little to no point changing cards except to deal with a little less heat and power usage.

[KainXS]

I have my 3850@ 802 right now with no problems so far, are you sure that their are problems at 785

[fhpchris]

also 3850 unlock bios

What about the 3850 with 512 meg?

[KainXS]

I can only get this high with no problems

[keenan]

Ok, so I just got my Powercolour 3850 pro 256mb. Ran a few tests and max overclock is 750/2000. Would flashing with this bios hold any perforformanne increase...?

[ghost101]

I have the powercolor hd 3850 and max stable clock using atitool for me is also 750/2000 (749.25/1998 to be exact). I wonder if its a BIOS issue?

Also, do these BIOSes disable powerplay?

[keenan]

Tried the modded bios, but getting higher temps with no added performance, just using stock...

Can someone edit my default bios so that its runs at 3D clock of 725/1800 please

[roadie]

I have the powercolor hd 3850 and max stable clock using atitool for me is also 750/2000 (749.25/1998 to be exact). I wonder if its a BIOS issue?

Also, do these BIOSes disable powerplay?

Pretty sure all the Powercolor's are locked at 750. All the reviews I have read have suggested so, which is a shame. Completely unlocked, the Powercolor 512mb 3850s would be amazing value for money.

[ghost101]

Pretty sure all the Powercolor's are locked at 750. All the reviews I have read have suggested so, which is a shame. Completely unlocked, the Powercolor 512mb 3850s would be amazing value for money.

Im not too sure. A BIOS cant cause artifacting can it? The card doesnt lock up at above 750 but artifacts instead in atitool. CCC itself doesnt detect a problem at 770.

[JamesBong420]

<--- 3850 stuck at 860mhz no matter the volts...

[the-strokes]

<--- 3850 stuck at 860mhz no matter the volts...

with the modified bios ?

[Astennu]

What about the 3850 with 512 meg?

I guess the HD3870 bios could work there. It might upp the voltages to HD3870 levels and also gives you HD3870 overcloks. Would be nice if it works

[the-strokes]

I guess the HD3870 bios could work there. It might upp the voltages to HD3870 levels and also gives you HD3870 overcloks. Would be nice if it works

ddr4 bios for ddr3 card

[Astennu]

Owh yeah forgoth bout that one

maybe the bios of this card then:



HiS IceQ @ 735-980 512 MB

[JamesBong420]

yup with the 770975.sb bios im stuck at 860 no matter the volts i went up to 1.49v and still no go 1.4 v i can do 850..