It is with a heavy heart I tell Sims 3 is not supported on macOS 10.15. I have, with @Bluebellflora 's help managed to keep the game running all up to High Sierra, but this update appears to have been the last straw that broke the camel's back. Since macOS 10.15 Catalina does not support 32-bit programs, The Sims 3, as well as SimCity 2013, got deactivated when I finished the operating system. Download The Sims™ FreePlay and enjoy it on your iPhone, iPad, and iPod touch. From the creators of The Sims ™ series of best-selling mobile games comes a complete Sims experience that you can play on your iPhone and iPad!
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Well, yes. The Sims 3 is pretty intense on graphics, but the MacBook Airs have excellent graphic cards. The 11 inch model should handle it just fine, so you can really run it on anything. The MacBook Air is designed for portability but yet power as well.
Specs for the Sims 3 were probably still written mostly for HDD drives. Remember, the MacBook Air uses a SSD drive. This means that the drive does not spin, and it is mounted on the logic board just like the iPad and iPhone. Because the computer can access its data faster through the hard drive, the processor does not have to be quite as powerful. Apple wouldn't make it if it wasn't awesome.
The one thing I would recommend is RAM. Try to max out your RAM as much as you can depending on which Mac you get, especially because what you get on the MacBook air is what you're stuck with. Meaning that you cannot go back and add RAM later. Everything on the MacBook Air except batteries and speakers are built directly onto the Logic Board.
Good Luck!
Specs for the Sims 3 were probably still written mostly for HDD drives. Remember, the MacBook Air uses a SSD drive. This means that the drive does not spin, and it is mounted on the logic board just like the iPad and iPhone. Because the computer can access its data faster through the hard drive, the processor does not have to be quite as powerful. Apple wouldn't make it if it wasn't awesome.
The one thing I would recommend is RAM. Try to max out your RAM as much as you can depending on which Mac you get, especially because what you get on the MacBook air is what you're stuck with. Meaning that you cannot go back and add RAM later. Everything on the MacBook Air except batteries and speakers are built directly onto the Logic Board.
Good Luck!