3DMark
3DMark is the latest version of this hugely-popular synthetic benchmark. Making use of DX11 features such as tessellation, compute shaders and multi-threading, it provides modern-day results and is available as a free download.
Using the Titan X at resolutions lower than 2,560x1,440 is a waste of resource. Cranked up to 4K it is 27 per cent faster than the GTX 980 and 61 per cent faster than the original Titan released two years ago.