Crysis 2 Minimum System Requirements
CPU: Intel Core 2 Duo 2Ghz, AMD Athlon 64 x2 2Ghz or better
GPU: NVidia 8800GT 512Mb, ATI 3850 512Mb or better
RAM: 2GB
DX: 9
Shader: 3.0
OS: Windows XP
Crysis 2 Recommended System Requirements
CPU: Intel Core 2 Duo 2.66Ghz, AMD Athlon 64 x2 2.66Ghz or better
GPU: NVidia GTX280 1GB, ATI 4870 1GB or better
RAM: 3GB
DX: 9
Shader: 3.0
OS: Windows XP
Taken from the back of the box :)