GPU MHz Speed

[Amers]

This.

You can OC the memory clock and the core clock, by how much depends on your exact GPU model. It won't mess with the movement. Depending on the OC you could increase the FPS in games by probably ~10% or so.

Oh, so am I understanding correctly that I can overclock my gpu to my GPUs limit, but overclocking the cpu will instead mess with the movement?