NVIDIA announced that with the launch of the GeForce 343.xx driver series it will phase out driver support for a list of older graphics cards. A full list of cards that will no longer receive new features can be found over here. Most of the cards on the list are pretty old, includes the GeForce 8000/9000 and the GeForce 100/200/300. From the GeForce 400 series the GeForce 405 card is the only model to hit end-of-life phase.
After Release 340, any subsequent driver release starting with Release 343 will cease to support the products listed in this section.
The Release 340 drivers will continue to support these products until April 1, 2016, and the NVIDIA support team will continue to address driver issues for these products in driver branches up to and including Release 340. However, future driver enhancements and optimizations in driver releases after Release 340 will not support these products.