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.