Ok i got sims 3 on the first day it came out an like a dump *** knowing i have only 959 of random access memory on my computer so yea will i need just more ram or a graphics card. thnx heres info.
RAM: 959
PROCESSOR: AMD turion(tm) 64 X2 TL-58 1.9 GHz

well you have 959 what of ram i have 4gb of ram and that is a pretty decent amount also 1.9 GHz isnt too high mine runs at 2.6 so ram helps with multi tasking so its a combo of both

Source(s):

Computer Technician

The Sims? 3 Minimum Hardware Requirements

FOR WINDOWS XP
?2.0 GHz P4 processor or equivalent
?1 GB RAM
?128 MB Video Card with support for Pixel Shader 2.0
?The latest version of DirectX 9.0c
?Microsoft Windows XP Service Pack 2
?At least 6.1 GB of hard drive space with at least 1 GB of additional space for custom content and saved games

FOR WINDOWS VISTA
?2.4 GHz P4 processor or equivalent
?1.5 GB RAM
?128 MB Video Card with support for Pixel Shader 2.0
?Microsoft Windows Vista Service Pack 1
?At least 6.1 GB of hard drive space with at least 1 GB of additional space for custom content and saved games

For computers using built-in graphics chipsets under Windows, the game requires at least:
?Intel Integrated Chipset, GMA 3-Series or above
?2.6 GHz Pentium D CPU, or 1.8 GHz Core 2 Duo, or equivalent
?0.5 GB additional RAM

RAM, you can buy it cheap about