Thanks all for the suggestions.
I think I am convinced to buy the Powerbook and max out the memory.
Might go for the 15" instead of the 12" -seems so small...
I will try to get the Mac dealer to demonstrate the ArchiCAD use on the 12...
jacek lisiewicz
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arkhos-tekton, architects
carmichael, ca
Mac OS X 10.15.5
IMac Retina 5K, Intel Core I7
32 GIG Memory, AMD Radeon R9
ArchiCAD 24