Both processors are shipping in volume today. Intel SpeedStep technology provides the ideal combination of instantaneous performance and low power to extend battery life. Intel SpeedStep Technology Mobile Pentium III processors featuring Intel SpeedStep technology are designed to deliver desktop-class performance for mobile PCs. The processors can dynamically switch clock frequency and voltage, depending on whether the computer is running on batteries or is plugged into AC power. When a user plugs into an AC outlet, the notebook can automatically switch to Maximum Performance Mode, increasing the frequency significantly.
Users also have the freedom to select the Maximum Performance Mode even while running on batteries.
Making the switch is as easy as clicking an icon at the bottom of the screen, and no reboot is required. All of Intel's mobile processors are designed specifically for mobile computers. As such, they run at a lower voltage than their desktop counterparts, which helps to save battery life. Another advantage of Intel mobile processors is that they are significantly smaller than desktop processors, enabling the development of even lighter and thinner mobile computers. In BGA and Micro PGA packaging, Intel mobile processors are the size of a postage stamp and weigh about the same as a nickel.