An accelerator card is a hardware expansion for Amiga computers that replaces the original Motorola 68000 CPU with a faster processor such as the 68030, 68040, or 68060. These cards connect via the CPU socket in classic models like the Amiga 500 and 2000, or through Zorro expansion slots in desktop systems, and typically include additional Fast RAM and sometimes SCSI controllers. They provide substantial performance improvements for CPU-intensive operations, enabling modern applications, development work, and multimedia tasks that would otherwise overwhelm the base system.