One outstanding question about OS X Mavericks is the minimum hardware requirements needed to run the operating system. There are a lot of older Core 2 Duo machines kicking around, and those owners are wondering it they still have the horsepower to run Mavericks. Apple hasn't released those details, but Apple Insider talked to OS X developers who have access to release notes and other details about OS X 10.9.
According to AI's sources, any Apple computer capable of running OS X 10.8 Mountain Lion will be able to run Mavericks. Thi