When we reviewed the ThinkPad T410s back in July, we appreciated Lenovo’s ability to take an already stellar business notebook and make it even better. As with that earlier model, the latest iteration of the T410s sports some notable improvements, including a processor upgrade and the addition of Nvidia’s Optimus graphics technology, which automatically engages the laptop's dedicated graphics processor when needed. The good news is that the improved CPU in the new model we tested earns the updated T410s laurels for best-performing thin-and-light notebook we’ve seen to date. The bad news is its battery life is below average