What type of computer do you play The Sims 4 on?

I have an Alienware that I use for other games too. I do think it's worth it to have a good computer even if you only play Sims, though. If you like buying all of the DLC then the game will be very demanding to run when it's at the end of its lifespan. Sims 4 will eventually heat up a potato just like Sims 3 does. It'll take longer to get to that point since it's optimized better, but it'll get there eventually.