NVIDIA Optimus technology helps make graphics automatic, instantaneous and seamless. Users no longer have to manually force switching to reduce performance and save battery life. Now they can have extended battery life and electrifying multimedia performance.
By switching automatically between high performance and energy saving graphics, ThinkPad laptops with Optimus achieve up to 33 percent longer battery life over discrete only mode. That adds up to one extra hour of battery life per charge. ThinkPad also supports Optimus technology to drive four displays via select ThinkPlus docks.
Source: Lenovo