I had it on an SE/30: 16 MHz 68030, maxed out at 8MB of RAM, 1M per stick. (Later you could get bigger sticks; I never did.) It had floating point hardware 5x as fast as the IBM PC-AT's coprocessor. The whole machine with 80M disk was $2400, in 1990 dollars. It had one slot, taken by the 10Mb/s ethernet card, and a 512x342 monochrome 1-bit-deep display.
It ran MacOS7's GUI, and it was as responsive as anything you run today.
It ran MacOS7's GUI, and it was as responsive as anything you run today.