Quadra

Apple's Quadra line, launched in 1991 with the Quadra 700 and 900, marked the Mac's jump to the Motorola 68040 processor — the first Mac chip with a built-in floating-point unit and a real performance leap over the 68030 machines that came before.

The 800 and the AV-focused 840AV pushed further into video and audio production, aiming squarely at the desktop publishing and multimedia professionals who'd made the Mac their platform of choice. The Quadra name didn't last long — Power Macs replaced it within a couple of years — but for a brief stretch it was the fastest thing Apple made.