> Interesting thought. I tried to find an PCI HD 5450 back around the time
> AmiWest 2017 was occuring without luck. They made a few, but they are rare.

...and expensive: http://www.vgastore.com/search?q=ap5450 (US-based dealer)
(Amazon Germany has a used one (CGA-5452PLI) for 50 EUR (61 USD).)

> Hans de Ruiter has posted a screen shot of a Polaris based card running
> in a SAM460 system.

Nice, GCN4 support. MorphOS will have to play serious catch-up :-)