There is a huge difference between a stock A1200 and a
towerized PCI enhanced A1200.
The numbers are difficult to spit out, but I would suggest at least an
040/40 in the system to drive everything. I can't explain why, but my
tower 1200 with a Mediator and Voodoo3 has a better display than my PC
with it's GeForceII (Winders/Linux/Amithlon).
If you aren't worried about the money, an A1200 with gfx card is a
good "bridge" system to an A1, Pegasos, or Umilator. Because, you'de
have to get used to running applications in RTG ;-)