Lenovo announced ThinkPad T, L and W business laptops, while Sony announced a lineup of Vaio C laptops with Intel's new Core i3, i5 and i7 chips. Dell in early February announced business laptops based on the Sandy Bridge chips.

The laptops will ship starting mid-March and come with dual-core and quad-core processors and fixed Sandy Bridge chipsets. Late last month Intel halted shipments of Sandy Bridge chipsets after it found a design flaw, which prompted some PC makers such as Hewlett-Packard and Dell to halt or delay product shipments.

Intel's Sandy Bridge processors are faster and more power efficient than its predecessors, which could help programs run faster while consuming less power, said Roger Kay, principal analyst at Endpoint Technologies Associates.

"That ends up translating to longer battery life," Kay said.

Sandy Bridge also marks the first time that Intel has put the CPU and graphics processor in a single chip, which is a big step forward, Kay said.