SMITE® minimum requirements for Windows assume having at least Windows 7 operating system. Your processor should be Core 2 Duo 2.4 GHz or Athlon X2 2.7 GHz or a more powerful one. The minimum RAM requirement is 4 GB. As for a graphics card, it should be Nvidia GeForce 8800 GT. You also have to have 30 GB free disk space to install the game.
As for Mac OS, SMITE® requirements here start with OS X 10.10 operating system. Processor needs to be at least Core 2 Duo 2.4 GHz or Althon X2 2.7 GHz. 2 GB of RAM is required. Your graphics card should be ATI or Nvidia graphics card with 512MB video and Shader Model 3.0+ support. (ATI Radeon 3870 or higher, Nvidia GeForce 8800 GT or higher). Finally, the game needs 10 GB of free disk space.