I didn't think that Vader really had any "enhanced" cybernetic parts. I've always got the impression that they were simple replacement prostetics to replaced damaged and destroyed parts. Vader never seems particularly fast or strong.
I think the helmet may have visual enhancement stuff, though.
I think the helmet may have visual enhancement stuff, though.
The scene in RotS where you see the inside of the helmet as it turns on certanly implies that, anyway.