sentence: the great leap toward 64-bit computing and the maintenance of backward compatibility with 32-bit and 16-bit software enabled the x86 architecture to become an extremely flexible platform today , with x86 chips being utilized from small low-power systems ( for example , intel quark and intel atom ) to fast gaming desktop computers ( for example , intel core i7 and amd fx ) , and even dominate large supercomputing cluster , effectively leaving only the arm 32-bit and 64-bit risc architecture as a competitor in the smartphone and tablet market .