Upgraded MacBook with 1.3GHz CPU will run $150 to $250 more than stock modelsThe 12-inch MacBook comes in two variants: a model with a 1.1GHz Intel Core M processor, and another with a 1.2GHz Intel Core M CPU. Both can be upgraded to a 1.3GHz Core M, though, and the prices for that upgrade have been revealed.
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Upgraded MacBook with 1.3GHz CPU will run $150 to $250 more than stock models