Jelly_Donut, where do you come up with this stuff?
The machine still has to look at /etc/hosts to find where localhost is. If you put the server name and address of the machien you are connecting to via MySQL into /etc/hosts you've made the time even.
Now, if you want to say it should be faster because you don't have to go across a network, even an local one, I would agree with you.