Apple has begun shipping the more powerful Core i7 version of the 27-inch iMac, according to shipping notices. A variant of the already high-end Core i5 model, which began shipping yesterday, the i7 boosts core speeds from 2.66 to 2.8GHz, and also enables performance-enhancing technologies such as hyperthreading. Features are otherwise identical to the i5, including options for up to 16GB of RAM and 2TB of hard drive storage. A Magic Mouse is included by default.
