The G4 Quicksilver came in 533MHz, 667MHz, 733MHz, 800MHz, 933MHz, And 1.0GHz speeds.
^^ this information is incorrect, the slowest Quicksilver was 733mhz..
the digital audio series:
466,533,667,733
and qs series:
733, 800 (single, dual), 867, 933, 1ghz (Dual)
the DA + Quicksilver models share the most similarities + compatibilities of the powermac g4 series types, ie: bus speed, ram speed, hd speed, power supply, all compatible, motherboard is probably the same size + layout aswell