I don't think it will do anything special to be honest. ARM is primarily an integer-based CPU which won't do much in the floating point world of video cards. Pretty much all games going forward are going to be optimised for Radeon hardware, especially with Mantle and the ARM processor isn't going to make a huge difference. I could be wrong, I don't know exactly what nVidia plans to do with the ARM CPU on their card but CPUs are generally useless for graphics because of their affinity for integer math over floating point math.