Hot Hardware published a review on the Lenovo ThinkPad P70 Mobile Workstation: Xeon And Quadro On The Go A quote from the article:

At a time when laptop makers are shunning big and bulky notebooks in favor of thin and light designs, Lenovo went a different direction with its ThinkPad P70, a mobile workstation brimming with high-end hardware for tackling rough and tumble tasks in the field. It's all about finding the right tool for the job, and just as a lumberjack wouldn't trade his gas-powered chainsaw for a Swiss Army knife just because he could fit in his pocket, there are certain computing tasks that require desktop-class performance. That's what the ThinkPad P70 aims to deliver.

The ThinkPad P70 is one of the first mobile workstations to employ a mobile Xeon processor option based on Intel's Skylake architecture. This particular configuration features a Xeon E3-1505M v5 CPU, a brawny quad-core slice of silicon clocked at 2.8GHz to 3.7GHz. And for graphics, Lenovo crammed a discrete NVIDIA Quadro M4000M GPU with 4GB of GDDR5 memory inside.

 Lenovo ThinkPad P70 Mobile Workstation Review: Xeon And Quadro On The Go @ HotHardware