The Macintosh IIfx is the fastest of the II line and shipped with a 40MHz Motorola 68030 processor.
The floppy drive, ADB and serial ports on the Macintosh IIfx are controlled by a pair of 10MHz 6502 processors.
The Macintosh IIfx uses the Motorola 68030 processor clocked at 40MHz, making it the fastest '030 based Macintosh from the factory. A Motorola 68882 math co-processor is included.
The IIfx uses unique memory which uses 64 pins, not shared by any other Macintosh model.
- Set the system date to 3/19/90 (the release date of the IIfx), and restart while holding down Command-Option-f-x. You'll see a color picture of the IIfx design team. Click the mouse to continue.