"Why in the world does this matter? Well, if having a pretty extensive system monitor isn't good enough for you, I've got one more trick up my sleeve. Let's say you do something to your system such as upgrading your motherboard drivers, install a new hard drive, OC your system, or whatever. You can turn on the counters, log your machine for a day (or however long you like) of normal use under the previous condition, make your changes, log the machine under the new conditions doing the same kinds of things, and then open up two Performance Consoles."