Oh yeah, that'll make them run scared. *Snicker-Snort*
Nah, but seriously yes it should run both games on highest settings.
However with Sims 3, please keep in mind due to the game engine's quirks the game still suffers from micro-stutters and periodic slow downs. There is not a lot you can do to fix this. Even on the bestest desktop.
Also the more content you add to the game, like custom content, game mods and store content the more the game will lag. This is due to the way the game handles additional content. Again, not much can be done to speed that up unfortunately. But it is far less noticeable on a desktop.
And you may need to tweak the graphics card settings - So Sims 3 gets recognized by the card
How-To: Get Sims 3 to Recognize a New Graphics Card
http://www.carls-sims-4-guide.com/forum/index.php?topic=26753.msg446248#msg446248Thanks for asking!!