Go to Steam Game options, Preferences, Launch, then type in "-dxlevel 90" without the quotes. But seriously, your FX card will perform very poorly with DX9. I had a FX5700le before and it rocked on DX8, but lagged like crap on DX9.
Originally Posted by marcin123b
how do i turn on dx level 9 on HL2 it is cruently on 8
I am doing this because im running at 800/600 with everything on high and want more quality