System Requirements: Digital Rights Management (DRM) - The boxed/retail PC version of Mass Effect 2 will use only a basic disk check and it will not require online authentication.
PC MINIMUM System Requirements
OS = Windows XP SP3 / Windows Vista SP1 / Windows 7
Processor = 1.8GHz Intel Core 2 Duo or equivalent AMD CPU
Memory = 1 GB RAM for Windows XP / 2 GB RAM for Windows Vista and Windows 7
Hard Drive = 15 GB
DVD ROM = 1x Speed
Sound Card = DirectX 9.0c compatible
Direct X = DirectX 9.0c August 2008 (included)
Input = Keyboard / Mouse
Video Card = 256 MB (with Pixel Shader 3.0 support). Supported Chipsets: NVIDIA GeForce 6800 or greater; ATI Radeon X1600 Pro or greater. Please note that NVIDIA GeForce 7300, 8100, 8200, 8300, 8400, and 9300; ATI Radeon HD3200, and HD4350 are below...
System Requirements: Minimum
Connectivity: Requires the Steam client to install and play
Sound: Windows-compatible sound card
Hard Drive Space: 9 GB Available Hard Drive Space
Operating System: Windows Vista / 7
Processor: 3.0 GHz Dual Core or better Processor
RAM: 4 GB Available System Memory
Video Card: 512 MB DirectX 9-compatible Video Card or better (NVIDIA GeForce GTX 460 / ATI Radeon HD 5850)
Recommended
Processor: 2.4 GHz Quad Core or better Processor (enhanced for multi-core processors)
Video Card: 768 MB DirectXR 9-compatible Video Card or better
System Requirements: Minimum PC System Requirements
OS: Windows XP, Vista or 7 (latest service pack)
CPU: AMD Athlon 64 X2 6000+ or Intel Core 2 Duo E6750 2.66G
RAM: 2 GB or greater
GPU: AMD Radeon HD 3870 or Geforce 8800GT
HDD: 30 GB of hard drive space
DirectX: DirectX 9.0c
Optical Drive: DVD-ROM Drive
Internet Connection