From TDN

Please use this section only for listing video cards that have been tested with the <SimulateFences> added to the torquesettings.xml file for a performance increase. For a description of what <SimulateFences> does, please see this thread.

Torque X 3.0

Video Card	Chipset OEM	Enable Simulate Fences Recommended	Notes
3870	ATI	True	None at this time
GeForce 7150M	NVidia	False	Notebook integrated video card. Poor TX2D lighting performance.
GeForce 7900	NVidia	True	None at this time
GeForce 8600GT	NVidia	False	Works a bit smoother off than on. Not much of a difference.
GeForce 8600MGT	NVidia	True	Definitely needed to be set to true... great increase in framerate
GeForce 8800GT	NVidia	False	Standard PCI-E Card. 512MB version.
GeForce 8800GTX	NVidia	True	Stuttering makes it unplayable on false.
GeForce 9600GT	NVidia	True	Definitely needed to be set to true... great increase in framerate
GeForce 9800M GTS	NVidia	True	HUGE difference for self-made games
GeForce 9800 GT	NVidia	False	Haven't noticed a difference either way.
GeForce 9800 GTX	NVidia	True	Wasn't playable untill set to true.
X300	ATI	True	None at this time
X1600	ATI	False	Have not noticed any differences on or off
945 Express	Intel	False	No change, false or true.
GeForce GT 260	NVIDIA	True	It lags either way :(