Here are the Need for Speed: Most Wanted System Requirements (Minimum)
CPU: Pentium 4 or Athlon XP
CPU SPEED: 1.4 GHz
RAM: 256 MB
VIDEO CARD: 32 MB DirectX 9.0c compatible 3D video card (NVIDIA GeForce2 MX+ / ATI Radeon 7500+ / Intel 915+)
TOTAL VIDEO RAM: 32 MB
3D: Yes
HARDWARE T&L: Yes
DIRECTX VERSION: DirectX 9.0c (included on disk)
OS: Windows 2000/XP
FREE DISK SPACE: 3 GB
SOUND CARD: Yes
CD-ROM: 8X Speed CD/DVD-ROM (This game contains technology intended to prevent copying that may conflict with some CD/DVD-ROM, CD/DVD-RW and virtual drives.)

Need for Speed: Most Wanted Recommended Requirements
CPU: Pentium 4 or Athlon XP
CPU SPEED: 2.2 GHz
RAM: 512 MB
VIDEO CARD: 64 MB 3D video card (NVIDIA GeForce 6200+ / ATI Radeon 9800+ )
TOTAL VIDEO RAM: 64 MB
PIXEL SHADER: 2.0
3D: Yes
HARDWARE T&L: Yes
DIRECTX VERSION: DirectX 9.0c (included on disk)
OS: Windows 2000/XP
FREE DISK SPACE: 3 GB
SOUND CARD: Yes
CD-ROM: 8X Speed CD/DVD-ROM (This game contains technology intended to prevent copying that may conflict with some CD/DVD-ROM, CD/DVD-RW and virtual drives.)