I'd have to do the math, but the Mini is very power efficient¹, so perhaps it was just enough graphics capability for the watts it consumes (11 watts idle, 85 w

I'd have to do the math, but the Mini is very power efficient¹, so perhaps it was just enough graphics capability for the watts it consumes (11 watts idle, 85 watts max, if I recall correctly) ¹A lot of data centers these days bill you based on the power + bandwidth you consume, not the # of U's you use in a rack.