Ive had the raspberry pi model B and now I have my Pi2, and have never found the answer to this question.
How much processing power does the OS use, when it's being used?
When I say this I'm referring to when you type in startx, and it takes you to the GUI, vs staying at the command line style, and running applications from there. If someone could give me just an estimate such as 10%, 30%, ect... or something of that nature would be great.
My goal is to just find out if I would be able to see a significant performance boost by staying at the command line, rather then having the convenience of the desktop setting.