Should I activate the additional driver: Processor microcode firmware for Intel CPUs for intel-microcode [duplicate]

I have recently noticed that there is an additional driver called Unknown: Unknown here which was not there before:

I have already read this, and understand why it is there, but my question is, should I activate it? Will this make a difference? Or should I just leave it as it is as it sounds rather useful?

OS Information:

Description:    Ubuntu 15.04
Release:    15.04

I suggest activating the driver. There is no potential harm at all.

This driver updates CPU microcode.

If microcode in bios is older than in Ubuntu, it will be updated.

But do not expect any noticeable change.

You can read this for clarification.