Front mech confusion

[Xiorell]

I am trying to figure out if I need a front mech specially designed to work with 8sprockets/24speed

If it's good for 7/21spd is it gonna be cool for 8speed

 

[cadseen]

I am trying to figure out if I need a front mech specially designed to work with 8sprockets/24speed

If it's good for 7/21spd is it gonna be cool for 8speed

As long as its a triple changer it will be fine however many sprockets are on the back.