System requirements,

These are the minimum requirements for The Sims 3:

 

WINDOWS XP

 * 2.0 GHz P4 processor or equivalent
 * 1 GB RAM
 * A 128 MB Videocard that can cope with Pixel Shader 2.0
 * The most recent version of DirectX 9.0c
 * Microsoft Windows XP Service Pack 2
 * At least 6,1 GB free space on the harddisk + also at least 1 GB for the storage of your gameplay.

WINDOWS VISTA

 * 2.4 GHz P4 processor or equivalent.
 * 1.5 GB RAM
 * A 128 MB Videocard capable for Pixel Shader 2.0 
 * Microsoft Windows Vista Service Pack 1
 * At least 6,1 GB free space on the harddisk + also at least 1 GB for the storage of your gameplay.

For computers with build-in grafical chips, the game requires at least:

 * Intel Integrated Chipset, GMA 3-serie or better.
 * 2.6 GHz Pentium D CPU, or 1.8 GHz Core 2 Duo, or equivalent
 * 0.5 GB additiional RAM

VOOR MAC OS X

* Mac OS X 10.5.7 Leopard or better
* Intel Core Duo Processor
* 2 GB RAM
* ATI X1600 of Nvidia 7300 GT with 128 MB Video RAM, or 
  Intel Integrated GMA X3100.
* At least 6,1 GB free space on the harddisk + also at least 1 GB for the storage of your gameplay.
* The game will not function properly on Mac-Systems supported by
  PowerPC (G3/G4/G5), or on integrated videocards like GMA 950.