Jo22 you could pump 16-24bit to external DACs in two-three clocks (similar/same as Re: VESA feature connector devices)
probably source of some early SVGAs funny resolution limits in higher color depth despite not being ram speed limited.

One of my favorite finds:
InfoWorld Oct 20, 1986 https://books.google.com/books?id=mzwEAAAAMBA … nepage&q&f=true
Multiple 1024x768@16 cards in $2-3K range, and an absolute steal - $3K Number Nine 1280 1280x1024@256.

InfoWorld Mar 7, 1988 https://books.google.com/books?id=Cj8EAAAAMBA … nepage&q&f=true
1988 1664x1200 PC card + 19 inch B/W monitor $2400 combo 😮 😀