Check out the PC system requirements for Capcom’s Street Fighter 4:

Minimum Specs:
OS: Windows XP
CPU: Intel Pentium4 2.0GHz or higher
RAM: 1GB or higher
HDD: 10GB of free space or more
Video Card: DirectX 9.0c/Shader3.0 or higher compatible, NVIDIA GeForce6600 series, ATI Radeon(TM) X1600 or higher or higher, VRAM ?256MB or higher
Sound: DirectSound compatible, DirectX 9.0c (or higher) compatible
Input Devices: Mouse, Keyboard

What? Keyboard? Follow my advice and dont play SF4 on a keyboard unless you wanna get pwn3d every friggin’ time.

Recommended Specs:
OS: Windows Vista
CPU: Intel Core2Duo 2.0GHz or higher
RAM: 2GB or higher
HDD: 10GB of free space or more
Video Card: DirectX 9.0c/Shader3.0 or higher compatible, NVIDIA GeForce8600 series or higher, ATI Radeon(TM) X 1900 or higher, VRAM ?512MB or higher
Sound: DirectSound compatible, DirectX 9.0c (or higher) compatible
Input Devices: Gamepad ?Xbox360 Controller for Windows