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