intel-logoIf you’re buying a laptop, you might want to wait for a bit.

Hoping to spur some excitement for the fall computer-buying season, Intel is announcing its long-awaited Core i7 mobile processors for the fastest notebook computers on Tuesday. The world’s biggest chip maker is making the announcement at its Intel Developer Forum conference.

The new machines are based on the code-named Clarksfield processors that are based on Intel’s Nehalem architecture introduced in servers earlier this year. The Clarksfield processors come in a couple of variants and are built in Intel’s 45-nanometer manufacturing process. These processors are part of what Intel calls its Calpella platform, which is the latest iteration of its Centrino mobile platform technology.

Intel kicked off its Centrino platform in 2003; the mobile platform and its accompanying Centrino campaign helped Intel gain a big market share in mobile computer chips. So anytime Intel offers a refresh of the platform, it’s a big deal that can lead to a new wave of notebook computer buying.

These processors are arriving just in time for the Oct. 22 launch of Microsoft’s Windows 7 operating system. And they represent the best hope for a revival of computer sales. Intel has introduced a string of new products this year aimed at keeping it on top of the processor performance game. It introduced its code-named Lynnfield Core i5 chips earlier this month and it introduced its Nehalem server processors in March.