Dirt 3

Minimum Specifications:
Operating System: Windows XP/Vista/Windows 7
CPU: AMD Athlon 64 X2 2.8GHz, Intel Pentium D 2.8Ghz Processor
RAM: 2GB
Hard Disk Space: 15GB
Video Card: AMD Radeon HD 2000 256MB, NVIDIA GeForce 8000 Series 256MB
DirectX 9
DirectX compatible soundcard  

Recommended Specifications:
Enhanced for DirectX 11
Operating System: Windows Vista or Windows 7
CPU:AMD Phenom II or Intel Core i7 Processor
RAM: 3GB
Hard Disk Space: 15GB
Graphics Card: AMD Radeon HD 6000 Series
DirectX 11
Sound: DirectX compatible soundcard

(Source: www.specrequirements.com)