A:AnswerWell it's a Pentium processor. Not the fastest, far from slowest. I edit pics and it flies. I have watched 1080p video WHILE editing no problems. It's really going to depend on what kind of speed you need. You didn't say.
A:AnswerProcessor speed is set by the manufacturer of the chipset. You should not alter it's setting, risk of overheat.
Buy the unit with the processor you need.
You generally cannot change most processors in laptops now-a-days.
A:AnswerI would not use this computer for any gaming. It was sooo slow doing basic internet surfing I could not see it running more than one program at a time. I returned mine and upgraded to the Lenovo 14 inch 2 in 1 with a touch screen.