: 256MB NVIDIA® GeForce® 8600GT / ATI Radeon® X1950Pro or better. : At least 12 GB of free space for the installed game. Recommendation
— here's why:
If you already own the game on Steam, you can: : 256MB NVIDIA® GeForce® 8600GT / ATI Radeon®
Multiplayer modes, Zombies mode, and even the single-player campaign's cinematic cutscenes are often deleted. you can: Multiplayer modes