What does the T2 and T3 value in the “Full Scene Anti-Aliasing” setting mean?
Those additional settings are the “Temporal Anti Aliasing” values, they control the TAA multiplier. The TAA value found in normal ATI drivers is equivalent to the T2 value found here, this will effectively multiply the FSAA value by 2, that means, if you set the FSAA value to 4xT2, you will be getting 8xFSAA at the same speed of 4x. The T3 value is just an experimental option that multiplies the TAA by 3, that means if you use 4xT3 you would be getting 12xFSAA, but it may or may not work for some of you, all depends on what type of card, monitor and refresh rate combination you use.
