PC requirements

The Sims 3: High-End Loft Stuff System Requirements

The Sims 3: High-End Loft Stuff 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: High-End Loft Stuff 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 300 MB of free space (6.4 GB if installing with The Sims 3)with at least 1 GB additional space for custom content and s
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: High-End Loft Stuff is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running The Sims 3: High-End Loft Stuff on PC

Can my PC run The Sims 3: High-End Loft Stuff?
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: High-End Loft Stuff need?
At least 300 MB of free space (6.4 GB if installing with The Sims 3)with at least 1 GB additional space for custom content and s