MAC is an Operating System of World's most famous computer company Apple Incorporated Ltd. This kind of OS is used in desktop based computer, Laptops and iMac Products. One of the main feature of this OS is it supports 3D. Some MAC versions are 1. MAC OS 9 2. MAC OS X Lion 3. MAC OS X Snow Leopard.
This OS specially runs in 64 bit Intel CPUs. Also it can runs in 32 bit processor but you can get more performance in 64 bit.
In today's competition MAC OS has recently included a new feature in their laptop about most less battery consumption which can give your laptop perform longer than any other products.