PC requirements

Sonic Generations System Requirements

Sonic Generations needs at least Intel Pentium Dual-Core T4200 (2x2.0GHz) or AMD equivalent, 2GB RAM (XP)/3GB RAM (Windows 7 / Vista) and NVIDIA GeForce 8800 (512MB) / ATI Radeon HD 2900 (512MB) graphics. For the recommended experience you want Intel Core i5 @ 2.66 GHz / AMD Phenom II X4 @ 3.0 GHz, 3GB RAM and NVIDIA GeForce GTX 460 (1GB) / ATI Radeon HD 5850 (1GB) graphics.

Verified Sources: Steam store listing
Sonic Generations minimum and recommended PC specifications
Component Minimum Recommended
Operating system Microsoft Windows 7/Vista/XP Microsoft Windows 7
Processor Intel Pentium Dual-Core T4200 (2x2.0GHz) or AMD equivalent Intel Core i5 @ 2.66 GHz / AMD Phenom II X4 @ 3.0 GHz
Memory 2GB RAM (XP)/3GB RAM (Windows 7 / Vista) 3GB RAM
Graphics NVIDIA GeForce 8800 (512MB) / ATI Radeon HD 2900 (512MB) NVIDIA GeForce GTX 460 (1GB) / ATI Radeon HD 5850 (1GB)
Storage 11 GB free hard drive space 11 GB free hard drive space
Additional notes Microsoft no longer supports Windows 10 or older versions. Microsoft no longer supports Windows 10 or older versions.
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

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

Quick answers

Running Sonic Generations on PC

Can my PC run Sonic 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 Sonic Generations need?
11 GB free hard drive space
What is the difference between minimum and recommended specs?
Minimum means the game starts and is playable, usually at 30fps on low settings at 1080p. Recommended is the developer's target for a smooth 60fps experience at high settings.