Could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here: http://answers.ea.com/t5/The-Sims-3/HOW-TO-DxDiag-for-Sims-3-PC-Only/td-p/1049584/
You can attach the txt file to your post directly.
Try updating your graphics drivers through the Catalyst center or the AMD web page.
Your computer has a 1Tb drive and the partition for Windows is only 199.4Gb - that is not enough. what happened to the reset of the drive? The GTX 560Ti driver needs to be updated. The GTX 560Ti is not in the TS3 database. You need to edit the games .sgr files to add the GTX 560Ti. Here is a how to - Sims 3 graphics card
