Basically, the game will support Windows XP. The specs also recommend that users have a high-end graphics card like an Nvidia Titan to run the game to its fullest graphical capabilities.

The specs are listed below:

Minimum
Windows: XP (32-Bit), Vista, 7 or 8
CPU: 2.2 GHz Dual Core e.g. Intel Core 2 Duo
RAM: 2GB
Direct X: 9.0c
Graphics Card: DirectX 9, Shader Model 3 compliant e.g. NVIDIA GTS 250 (or AMD equivalent e.g. HD Radeon 4000 series) or higher

For 3D Vision Support:
NVIDIA GTX 275 or higher
120Hz Monitor
NVIDIA 3D Vision kit for Windows Vista, 7 or 8

Recommended
Windows: Vista, 7 or 8
CPU: 2.6 GHz Quad Core e.g. Intel Core i5
RAM: 4GB
Direct X: 11
Graphics Card: NVIDIA GTX 580/660 Ti (or AMD equivalent e.g. 7870) or higher

For 3D Vision Support:
NVIDIA GTX 580/660Ti or higher
120Hz Monitor
NVIDIA 3D Vision kit for Windows Vista, 7 or 8

Optimum
Windows: Vista, 7 or 8
CPU: 3.4 GHz Multi-Core e.g. Intel Core i7
RAM: 8GB
Direct X: 11
Graphics Card: NVIDIA GTX 690 / NVIDIA Titan

For 3D Vision Support:
NVIDIA GTX 690
120Hz Monitor
NVIDIA 3D Vision kit for Windows Vista, 7 or 8