== CPC464 Original version ==
Original version. Big mainboard, old Gate Array (with cooling plate). Real wires going to keyboard.
== CPC464 Revision 1 ==
Big mainboard, separate soldering points for old and new Gate Array (with changed pin-outs). Fragile plastic wires going to keyboard.
== CPC464 Revision 2 ==
Medium sized mainboard. Seems to be same as Revision 1, but components arranged more tightly.
== CPC464 Revision 3 (cost-down) ==
Tiny mainboard. Uses 100pin SMD Gate Array (combines the old Gate Array, CRTC, and some FDC/DRAM/RESET logic in one chip).
== CPC664 Original version ==
== CPC6128 Original version ==
== CPC6128 Revision (cost-down) ==
== CPC 464+/6128+ ==
Same mainboard is used in 464+ and 664+ (though not all components installed in 464+, and with different [[LK Links]].Uses 160pin SMD Gate Array (ASIC).
== GX4000 ==