PC requirements

Portal 2 System Requirements

Portal 2 needs at least 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher), 2 GB RAM and Video card must be 128 MB or more and with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher). graphics.

Verified Sources: Steam store listing
Portal 2 minimum and recommended PC specifications
Component Minimum
Operating system Windows 7 / Vista / XP
Processor 3.0 GHz P4, Dual Core 2.0 (or higher) or AMD64X2 (or higher)
Memory 2 GB RAM
Graphics Video card must be 128 MB or more and with support for Pixel Shader 2.0b (ATI Radeon X800 or higher / NVIDIA GeForce 7600 or higher / Intel HD Graphics 2000 or higher).
DirectX Version 9.0c
Storage 8 GB available space
Additional notes DirectX 9.0c compatible
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.
Playing on a handheld instead? Players report Portal 2 as Platinum on Steam Deck and Linux.

Other platforms

Portal 2 is also available on these systems, where hardware is fixed and no per-PC check is needed:

Quick answers

Running Portal 2 on PC

Can my PC run Portal 2?
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 Portal 2 need?
8 GB available space