Review: Nvidia GeForce GTX Titan X in SLI

Overclocking

We know one card is able to overclock by over 20 per cent on the core and 15 per cent or so on the memory. Two cards achieve almost the same frequency scaling, to 1,236MHz engine and 8,004MHz memory... all without touching the voltage.

17 per cent better is a good return for the elevated frequencies.

An extra 20 per cent on top of super-quick performance? That'll do.