Here’s a list of the system requirements of The Sims 3 for PC, both desktop and laptop.

Desktop PC – Windows XP + SP2
2gz Pentium4 Processor OR Athlon 2000+ Processor
1GB of RAM
128mb Video Card (GeForce FX 5900 OR Radeon 9500)
Minimum of 6.5 GB of hard drive space with at least 1 GB additional space for your own content.

Desktop PC – Windows Vista + SP1
2.4gz Pentium4 Processor OR Athlon 2400+ Processor
1.5GB of RAM
128mb Video Card (GeForce FX 5900 OR Radeon 9500)
Minimum of 6.5 GB of hard drive space with at least 1 GB additional space for your own content.

Laptop – Windows XP + SP2
2gz Pentium4 Processor OR Athlon 2000+ Processor
1.5GB of RAM
128mb Video Card (GeForce Go 6200 OR Radeon mobile 9600)
Minimum of 6.5 GB of hard drive space with at least 1 GB additional space for your own content.

Laptop – Windows Vista + SP1
2.4gz Pentium4 Processor OR Athlon 2400+ Processor
2GB of RAM
128mb Video Card (GeForce Go 6200 OR Radeon mobile 9600)
Minimum of 6.5 GB of hard drive space with at least 1 GB additional space for your own content.