The new Lenovo ThinkPad L412, Lenovo's "Greenest Enterprise ThinkPad Laptop." Along with the wider 15.6-inch ThinkPad L512, the new Lenovo ThinkPad L412 is first product in the new Lenovo ThinkPad L series. In a press release in April, Lenovo claimed to have made these laptops into "the greenest on the market by integrating the highest amounts of post consumer recycled content." Base models start at $599, and include an Intel Core i3 processor. As of May 11, you could upgrade to a Core i5 chip for $150.