FEATURE                    PCI                        NuBus
  Bus Speed                  33 MHz                     10 MHz
  Theoretical Maximum        123 MB per second          40 MB per second
  Throughput
  Maximum Number of Slots    4 per bridge; 256 bridges  6 per bridge; 14
  bridges
  Real Throughput           
  writes                     90 MB per second writes    32 MB per second
  reads                      45 MB per second reads     20 MB per second
  Software                   Name Registry              Slot Manager
                             Open Firmware
  Form Factor                12.283 in. and 6.875 in.   12 in. and 7 in.

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