If you are looking for Left 4 Dead 2 System Requirements, then you came to the right place. Left 4 Dead 2 System Requirements - Minimum Supported OS: Windows® 7 / Vista / Vista64 / XP Processor: Pentium 4 3.0GHz Memory: 1 GB for XP / 2GB for Vista Graphics: DirectX 9 compatible video card with 128 MB, Shader model 2.0. ATI X800, NVidia 6600 or better Hard Drive: At least 7.5 GB of free space Sound...