3DMark - Firestrike Ultra
Fire Strike is a new DirectX 11 showcase benchmark designed for high-performance gaming PCs. The benchmark features real-time graphics rendered with detail and complexity far beyond what is found in other benchmarks. Fire Strike Ultra takes things a step further by running at 4K resolutions.
Performance Settings - Benchmarks Only
Fire Strike Ultra can simulate 4K and scale the output to whatever resolution you have available making the testing of that resolution available to those limited to sub-4k resolutions. Of course success with 4K comes down to frame buffer and memory bandwidth. Again the R9 Fury has the advantage. The Radeon RX 570 is doing pertty well with this test despite only having 4G of memory.