Materials Test Question

When doing a materials test you have the option here to adjust the speed and power for the material.
You can see I have it set for 600mm/min and 60% power.

My question is; how does this play into the materials test since I want different speed and power being tested?

Should I have the cut settings editor first image set for 0% power or 100% or some arbitrary value in the middle like 50%? What about the speed? Does the program just forget these values since its doing a test?

Sorry just checking for understanding of this and how it works. Boggles the mind for no reason… I think my mind has this question because I need to adjust this to see the text and sometimes I change from fill to line to see the boxes.