A CPU on its own cannot be a microcontroller alone via its definition; as a microcontroller contains a CPU and other needed components to drive it.
No microcontroller is going to beat a computer with a modern microprocessor on complex computing though. But it’s good to know tech is still improving on all sides.
Fot those who doesnt know, Samba is Linux’s implementation of the SMB Protocol, which lets you network share with password protection. This allows easy file transfers between Linux and Windows computers on the same network