IGN offers system specifications for the PC edition of Fable III (thanks VG247). This should assuage non-existent fears that a Windows port of an Xbox 360 game will tax modern PCs:

The minimum requirements are:

    • Operating System: XP 32 SP3, Vista 32/64 , Win 7 32/64
    • CPU: Intel Core 2 Duo 2GHz or AMD Athlon X2 4000+
    • Memory: 2GB
    • Hard Drive Space: 12 GB of free space
    • Graphics Hardware: NVidia 7600GT or ATI HD 2600 Pro
    • DirectX: 9.0c onward
    • Network: Internet or LAN connection required for multiplayer

The recommended system requirements are:

    • Operating System: Win 7
    • CPU: Intel Pentium 2.9Ghz Core 2 Duo or higher
    • Memory: 4GB
    • Hard Drive Space: 12 GB of free space
    • Graphics Hardware: Nvidia 260GTX 896MB or ATI 5770 1GB or higher
    • DirectX: 9.0c onward
    • Network: Internet or LAN connection required for multiplayer