Minimum requirements: Operating System: Windows 7 64bit Processor: Intel Core 2 Duo or AMD Athlon 64x2 5600+ RAM: 4 GB (prepare at least 16 GB if you plan to play with Enhanced Graphics Pack) Video Card: NVIDIA® GeForce® GT 420 or ATI™ Radeon™ HD 6850 or Intel® HD Graphics 3000 or better with 2 GB VRAM DirectX: 11 HDD Space: up to 43 GB