OPEN DES,
Yes. It will be the same for S, F and GD. That is usually the way that I will discover the error between FAC and FMGC calculated targets and add the appropriate amount to Vapp.
With the Perf APP page displayed and any characteristic speed in view, you can see any differences easily. e.g. S speed 190 in the MCDU, but S speed is at 193 on the PFD. So add 3 knots to Vapp and you'll be covered!!!