Advanced Micro Devices 486DX2 Microprocessor

As a worldwide quest for the computation crown continued into the fourth generation of PC-compatible microprocessors in the late 1980s, the 486 family grew with the use of internal clock doublers, triplers, and quadruplers creating the "speed demon" DX2s and DX4s. In March 1992, the 486DX2 was released with an external clock speed of just 25 MHz, but for its time, a lightning fast internal clock speed of 50 MHz.