Clock-doubling

The term clock-doubling refers to a process where microprocessors double their internal clock speed while maintaining the original I/O transfer (bus) speeds. The optimal end result is that information is sent twice as quickly, but clock doubling isn't always 100% efficient.

The Intel 80486 DX2/50 MHz was the first processor with clock doubling and was capable of running at 50 MHz rather than its default 25 MHz speed. Today, clock doubling is not required as the CPU (central processing unit) runs independently of the FSB (front-side bus) and connects directly to the Northbridge.

CPU terms, Multiplier, Overclocking