Intel has quietly begun shipping the faster ultra-low voltage processors in the Sandy Bridge family that may be destined for Apple. The 1.7GHz Core i5 2557M, the similarly clocked Core i7 2637M, and the 1.8GHz Core i7 2677M should all be reaching notebook manufacturers. The lone i5 carries 3MB of cache and will Turbo Boost up to 2.7GHz, while the i7s have 4MB of cache and will turbo to 2.8GHz and 2.9GHz respectively.
