Abstract: A machine tool, in particular a sawing machine, with a tool for metal cutting, in particular a saw band or saw blade, a drive device for driving and/or moving the tool, a controller for the drive device in order to control and/or regulate the drive device with a process dataset, as well as a communication device for data exchange between the controller and an external data memory and/or an external computer. The controller includes a detector for identifying the tool. A system for optimized operation of such a machine tool which additionally includes an external data memory and/or external computer is also provided.