DX9 baseline means requirement of shader model 2.0+, floating point rendering pipeline, etc... etc... etc... The Ti WON'T run such games.Blade_runner get your facts right, DX is always backward compatible, even if your card supports DX 8.1 & the game is DX 9c even baseline on the Ti it will run fine at DX 8.1 mode, automatically, although some game require U to enable a switch to use a special path for DX 8.1 mode like Halo