A lot of the Zen based APUs don’t support ECC. The next thing is if it supports registered or unregistered modules - everything up to threadripper is unregistered (though I think some of the pro parts are registered), Epycs are registered.
That makes a huge difference in how much RAM you can add, and how much you pay for it.
I’m pretty sure all the Zen CPUs have supported ECC memory, ever since the first generation of them.
A lot of the Zen based APUs don’t support ECC. The next thing is if it supports registered or unregistered modules - everything up to threadripper is unregistered (though I think some of the pro parts are registered), Epycs are registered.
That makes a huge difference in how much RAM you can add, and how much you pay for it.