S.T.A.L.K.E.R.: Call of Pripyat is the third installment in the S.T.A.L.K.E.R. nVidia GeForce 5900/ATI Radeon 9600/128MB DirectX 8 compatible video card.Intel Pentium IV 2 GHz/AMD Athlon XP 2200+.nVidia GeForce 9800 GTX/ATI Radeon HD 4850/512 MB DirectX 9 or 10 compatible video card.Intel Core 2 Duo E7400/AMD Athlon 64 X2 5600+.