DPI – Dots Per Inch measures how much resolution the mouse moves in less than an inch. The higher the DPI, the farther the cursor moves with the slightest movement of the mouse. Not everything is good.
Acceleration – This guy does a little bit of a spice on budget mice. I can not fix it. The way it works is that it travels more depending on the speed of movement. The cursor accelerates. For example, you can move the mouse less than an inch on the mousepad, but if you move it too fast, it will move farther, and if you move it slowly, it will move normally. Deceleration is the other way around.