About S.T.A.L.K.E.R.: Clear Sky

Minimum:
* Windows 2000 SP4, XP SP2 or Vista
* 2 GHz Pentium IV or Athlon XP CPU
* 512 MB RAM
* 128 MB VRAM
* GeForce 5700 or Radeon 9600 GPU
* 10 GB HD space
* Internet connection for multiplayer

Recommended:
* Core 2 Duo E6400 or Athlon 64 X2 4200+
* 1.5 GB RAM
* 256 MB VRAM
* GeForce 7900 or Radeon X1950 GPU