My Amigas were all pre-AGA and couldn't even display 640x480, only up to 640x240. That is without the specialty add-in board I had for primarily editing of still images. In any case it was also limited to 60Hz, not the fancy 72 of the AGA models (the Amiga 1200 and Amiga 4000)

Unfortunately I don't have any CRTs other than my TV (32") anymore. I also don't have any incandescent bulbs which I used to use exclusively years back.