> I too have upgraded my card to a Radeon RX550 and quite happy with > how it works with OS4. [...] If you really want to try out MorphOS on this > motherboard you need a Radeon X1650-1950 card [...]. On the X5000 > with a X1650-1950 card [...] You won’t have any legacy Warp3D software
Let's not forget that legacy Warp3D support gets lost on OS4 with jumping from a GCN1-based card to a GCN4-based card like your RX550 also.
> 3D support is patchy
What does that mean?
> the further up you go the card tree the worse the support and > less things will run.
True, and the MorphOS hardware compatibility page clearly states which cards are supported in 2D+3D, 2D+overlay or just 2D.
> Linux performance suffers too with anything less than a series 6000 card
The author of comment #14 pointed out that Linux is good enough with anything from R600 (= HD2000 series) up and that Evergreen cards (= HD5000 series) are among the best supported. Maybe this is different between x64 Linux and PPC Linux?
> They [...] said they have no interest in supporting newer graphics cards
Is this what they really said or just what you think they said? I guess it's more about the available developer resources than about interest per se.