Intel to push notebooks to 850MHz, source says

SpeedStep allows Intel's mobile processors to operate at two levels of performance. When a notebook is plugged into a mains outlet, the processor runs at "full power mode." Away from the mains outlet, the processor automatically drops its clock speed, preserving battery life.

The chip giant will launch two mobile Pentium IIIs on Monday, the source said. One of the chips will run at 850MHz in full-power mode, dropping to 700MHz when the notebook is running on batteries. The other chip runs at 800MHz in full-power mode, dropping to 650MHz away from the mains supply.

Also on Monday, Intel will launch a mobile Celeron processor running at 700MHz, the source said. Intel's Celeron chips are aimed at more value-conscious buyers.

Intel's fastest mobile Pentium III today runs at 750MHz, while the mobile Celeron line tops out at 650MHz.