PC requirements

The Sims 3: Ambitions System Requirements

The Sims 3: Ambitions needs at least (XP) 2.0 GHz P4 processor or equivalent; (Vista and Windows 7) 2.4 GHz P4 processor or equivalent, (XP) 1 GB RAM; (Vista and Windows 7) 1.5 GB RAM and A 128 MB Video Card with support for Pixel Shader 2.0 graphics.

Verified Sources: Steam store listing
The Sims 3: Ambitions minimum and recommended PC specifications
Component Minimum
Operating system Windows XP SP2, Windows Vista SP1 or Windows 7
Processor (XP) 2.0 GHz P4 processor or equivalent; (Vista and Windows 7) 2.4 GHz P4 processor or equivalent
Memory (XP) 1 GB RAM; (Vista and Windows 7) 1.5 GB RAM
Graphics A 128 MB Video Card with support for Pixel Shader 2.0
Storage At least 2.8 GB of free space (8.9 GB if installing with The Sims 3)with at least 1 GB additional space for custom content and s
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Other platforms

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

Quick answers

Running The Sims 3: Ambitions on PC

Can my PC run The Sims 3: Ambitions?
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: Ambitions need?
At least 2.8 GB of free space (8.9 GB if installing with The Sims 3)with at least 1 GB additional space for custom content and s