Intel Corp launched a lighter, power-saving microprocessor intended for use in ultra-thin laptops.

The new processor, dubbed the Pentium SU2700, comes amid investors' fears that cheaper processors such as the Atom, designed for use in ultra-cheap netbooks, are cannibalizing the market share for higher-margin, more expensive chips.

Acer and Asustek have said they will build laptops with the chip, and Microsoft will ensure its software supports it.