The Amiga 4000 (A4000) is a professional desktop computer released by Commodore in 1992, representing the final evolution of the classic "big box" Amiga line. It features the 32-bit Advanced Graphics Architecture (AGA) chipset and typically shipped with a Motorola 68040 CPU, though variants with 68030 processors and 68060 upgrades were also available. The system introduced the Zorro III expansion bus for high-performance peripherals and included both IDE and SCSI interfaces, supporting up to 128MB of Fast RAM in its desktop case with internal drive bays. Widely used for professional video production and 3D rendering, it remained the flagship Amiga until Commodore's demise in 1994.