Sorry, I had debug on, and for some reason OpenGL renders at the same speed with debug on and off ( which tricked me ) and DX9 renders considerably slower with debug on. With debug off, you're right, no speed change. Sorry for the false alarm.
The particle test thingy is about the same speed between OpenGL and DX9, the clock is still a good 25% faster.
The particle test thingy is about the same speed between OpenGL and DX9, the clock is still a good 25% faster.