As you already know, one will need a DX11 capable graphics card in addition to the insane system requirements to be able to run Crysis 3.
Crytek CEO Cevat Yerli said that the Crysis 3 is planned to be DX11 only, destroying the hopes of people running DX10 video cards who had previously expected Crysis 3 to run on a DX11 renderer but still support DX10 just like Crysis 2.
However, do you remember Crysis: Warhead?
Back then, Crytek decided that the gamers will need to upgrade their DX9 systems in order to play on enthusiast video setting.
It was only a matter of time before someone discovered a way to bypass Crytek`s marketing nonsense that supported Vista and new $$$ graphics cards.
The same thing is happening now, although some things are different in Crysis 3.
Crysis 3 brings us fancy video rendering features like Tessellation and Ambient Occlusion that are DX11 exclusive.
But what if you have an older GPU setup like GTX 295 which is a dual GPU card and you really don`t wanna buy an expensive new card that is DX11 capable just to be able to play Crysis 3?
Well, there is a solution for that and it`s called the Crysis 3 DX10 Patch.
Crysis 3 DX10 Patch will let you play the game on Direct X 9 capable video card by patching and replacing some of Direct X libraries in the Crysis 3 game folder.
That means that system Direct X files will remain untouched.
Crysis 3 DX10 Patch will lift up DX restriction in Crysis 3, but there are some drawbacks, like no improved Tessellation (DX11 only) and Ambient Occlusion will be completely disabled.
DX9 Support - latest release
FULL Singleplayer support
crash fix for Intel HD graphics
FXAA mode support
Multiplayer support for latest game version