Left 4 Dead Systemanforderungen
3.0GHz P4, Dual Core 2.0 or AMD64X2 (or higher)
1 GB for XP / 2 GB for Vista
DirectX 9 compatible video card (Video card must be 256 MB or more and should be a DirectX 9 compatible with support for pixel shader 2.0)
Windows Vista, XP, 2000
At least 7.5 GB of free space
DirectX 9.0c compatible sound card
There are only official system requirements on the site which are released by developers or an official publisher.
Can you run it?
Compare the system requirements with a configuration you can add below.