stock vs. port-installed radeonkms

[Mikhail T.]

This older laptop I'm dressing up with FreeBSD-12 has a Radeon card 
identified like this:

    drmn0: <ATI Mobility Radeon HD 4670> on vgapci0

It seems to work fine with the /boot/kernel/radeonkms.ko (and the RV730, 
R700 companion modules).

Will it work better (faster and/or offer more features) with 
graphics/drm-kmod, or is there no point in install the port in this case?

Thank you! Yours,

    -mi