Today at the SIGGRAPH 2015 Conference and Exhibition, Lenovo unveiled some new mobile workstations. The new ThinkPad P series are aimed at high-end professionals who need a lot of compute on the go. There are two models, with the P50 being a 15.6-inch version, which is a follow-on to the W541. The larger P70 features a 17.3-inch display. Both can pack some serious specifications under the hood, starting with the processor. More.