#68020 Upgrade.
I had one for a while. Unless you are mainly concerned with speeding up
floating point, DONT get it without the 32 bit wide fast ram. I had one w/o it,
and running flight simulator (very integer arithmetic intensive), with the
cache enabled, only got a 2% speedup. This was with one of the old 14mhz
internal boards.
As an aside, has anyone out there run FS on a 68020 machine with the 32 bit
RAM? How much smoother did the graphics look? I made sure that it would work
with one.