I never got the notification. I currently use quicksync with an i5-6400. I want to do most likely same as you with hanbrake encoding my library to h265 all the time. The only need for upgrading is my current CPU, that runs great on plex, but it lacks to power couple VMs. Also I don't want to buy graphics card, I don't need it.
And I do the numbers Intel CPU + quicksync vs AMD + Graphics card. Intel comes cheaper in this particular case.