Lowest to Highest - Gamer>Advanced>Hardcore. If you have version 1.9 and the DirectX 11 Ultra Upgrade + High Resolution Texture Pack that will get you the best option (Ultra). You can also get "Crysis 2 Advanced Graphics Options" tool which will give you a much greater amount of control of your settings.
Lowest to Highest - Gamer>Advanced>Hardcore. If you have version 1.9 and the DirectX 11 Ultra Upgrade + High Resolution Texture Pack that will get you the best option (Ultra). You can also get "Crysis 2 Advanced Graphics Options" tool which will give you a much greater amount of control of your settings.