Here are the Need For Speed: Most Wanted (2012) System Requirements (Minimum)
CPU: Core 2 Duo 2.4 GHZ or Althon X2 2.7 GHz
CPU SPEED: Info
RAM: 2 GB
VIDEO CARD: ATI RADEON 3870 or higher performance / NVIDIA GEFORCE 8800 GT or higher performance
DEDICATED VIDEO RAM: 512 MB
PIXEL SHADER: 4.0
VERTEX SHADER: 4.0
OS: Windows Vista (Service Pack 2) 32-Bit
FREE DISK SPACE: 20 GB
SOUND CARD: Yes

Need For Speed: Most Wanted (2012) Recommended Requirements
CPU: Quad-Core CPU
CPU SPEED: Info
RAM: 4 GB
VIDEO CARD: NVIDIA GEFORCE GTX 560 or ATI RADEON 6950
DEDICATED VIDEO RAM: 1024 MB
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: Windows 7 64-Bit
FREE DISK SPACE: 20 GB
SOUND CARD: Yes