What are portal 2 pc game system requirements?

Author: Valve Corporation
Developer: Valve Corporation
Release Date: April 18, 2011
Genre: Puzzle, Platform game
Features: (source: wikipedia.org)
In Portal 2 the player returns as Chell, having been in the detention of several hundred years, while the rest of GLaDOS and Aperture Science facility has fallen into disrepair.
Portal 2 continues to challenge the player through numerous puzzles and physics-basedplatforms with the gun-portal.
The game will feature two-player cooperative mode in addition to the single player mode.
System Requirements for Portal 2 and Portal 2: Peer Review

Windows System Requirements

Operating system: Windows XP, Vista or Windows 7

CPU: Intel P IV @ 3 GHz or 2 GHz dual core or AMD64X2 (or higher)

RAM: 1GB XP or Vista 2 GB / 7

Hard Drive: 7.5 GB free disk space

Graphics card: 128 MB graphics memory with pixel shader 2.0
Sound Card: compatible with DirectX 9

DirectX: Version 9.0c

Supported video cards: ATI Radeon X800 or better / NVIDIA GeForce 7600 or better /Intel Graphics HD 2000 or higher
System Requirements MAC OS

Operating System: Mac OS X 10.6.6 or higher

CPU: Intel Core Duo 2 GHz

RAM: 2 GB

Hard Drive: 7.5 GB free disk space

Graphics card: 256 MB of graphics memory
Sound Card: compatible with DirectX 9

DirectX: Version 9.0c

Supported video cards:
ATI Radeon 2400 or better / NVIDIA 8600M or more