Same as in the HTC One mini and SG S4 mini. Both seem to get good reviews speed-wise.

Chip is capable of running Android and WP, as well as connectivity with the networks in Russia and China, multi-sim support, LTE, the works.

Running at 1.7 on the S4 mini, so with my limited knowlegde I could conclude overclocking should not be a problem. I'm very sure it will run just fine now, but you never know