I have a very old (2011) Acer 5740G and it runs this game pretty well (be it at lowest settings @ 1366 x 768)
This thing is only running an old Intel i5 M430 2.7GHz, 4GB RAM and a Mobility Radeon HD 5650 1GB
I get fairly decent FPS, but it does lag quite badly during late game, at the end of month (running costs), and year (running costs + auto save)
Still, its fully playable.
My main home PC, which is an AMD 8320 4GHZ, 8GB RAM, and AMD 6870 1GB runs it perfectly, but in late game, it still suffers from the lagging.