Originally posted by: cobra77
I have a Gainward TI4200 128mb and have noticed no performance difference between DX8.1 and
DX9. I had to install it because Freelancer required it.
Originally posted by: Pete
FYI, DirectX includes not only Direct3D but also the rest of the DirectX components (sound, input, etc.). So while a game may not require D3D9, it may have been developed with the non-graphics part of DX9 in mind. At any rate, DX9 shouldn't really affect performance. Install it when you need to, but there's no sense in fixing something that ain't broke.