Expensive performance boost. For their top-of-the-line model in the E550-series, Lenovo not only integrated a speedy Core i7 CPU, but also a dedicated Radeon GPU. The resulting notebook costs almost 1000 Euro (~$1100). Is that too much money for an entry-level ThinkPad?
http://www.notebookcheck.net/Lenovo-ThinkPad-E550-Core-i7-Radeon-R7-M265-Notebook-Review.153470.0.html