In order for you to play Split/Second on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Microsoft Windows 7 / Vista SP2 / XP SP3
Processor (CPU):
3.0 GHz Intel Pentium D processor (Windows 7 / Vista) / 2.6 GHz Intel Pentium D processor (Windows XP) or 2.0 GHz AMD Athlon 64 X2 or equivalent processor
Memory (RAM):
2560 MB RAM
Graphics Card:
256 MB DirectX 9.0c-compatible, 3D video card supporting Shaders 3.0 (NVIDIA GeForce 7600 or better, ATI Radeon X1600 or better)
DirectX:
Version 9.0c
Storage:
6656 MB available space
Sound Card:
16-bit DirectX 9.0c-compatible sound card