3DMark Fire Strike
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.
3DMark Fire Strike remains an integral part of any benchmark suite, and though not always a definite indication of real-world gaming performance, it certainly gives you an idea. In all three of the Fire Strike tests, GTX 1080 is comfortably ahead of R9 Fury X.
You aren't going to see much difference between the air-cooled Aorus behemoth and the hybrid Inno3D card. The reason is simple enough: both have the same prescribed base and boost speeds though the Inno3D runs a touch faster on the memory. Our Aorus sample averaged 1,949MHz across the various games, and we can put the slightly better performance down to newer drivers.