PC requirements

The Sims 3: Generations System Requirements

The Sims 3: Generations needs at least Intel or AMD Dual-Core Prozessor (1.9 GHz) or better, 2GB RAM and NVIDIA Geforce GTS250 / ATI Radeon HD4800 or better graphics.

Verified Sources: Steam store listing
The Sims 3: Generations minimum and recommended PC specifications
Component Minimum
Operating system Windows XP SP3, Windows Vista, Windows 7
Processor Intel or AMD Dual-Core Prozessor (1.9 GHz) or better
Memory 2GB RAM
Graphics NVIDIA Geforce GTS250 / ATI Radeon HD4800 or better
Storage 1.5 GB hard drive space
Not sure how your PC compares? Use the Can I Run It checker — pick your CPU and GPU and it tells you which column you land in.

Other platforms

The Sims 3: Generations is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running The Sims 3: Generations on PC

Can my PC run The Sims 3: Generations?
Compare your CPU, GPU and RAM against the minimum column below. If your parts match or beat every minimum row, the game will launch — though you may need to lower settings. Matching the recommended column is what gets you 60fps at 1080p.
How much storage does The Sims 3: Generations need?
1.5 GB hard drive space