Test results: Ultra HD (3840x2160)
The biggest challenge comes at the UltraHD resolution which has four times as many pixels as the FullHD and 125% more than the WQHD. At the medium settings the GTX 1080 Ti is leading again. The R9 380 shows us results of just under 60 fps and both the GTX 1060 3GB and especially the GTX 1050 Ti do not make it in this test at all, even with the 4GB framebuffer. Looking at the Vegas, we see high framerate results for them, bypassing the competition in the GTX 1080 and 1070.
UltraHD with ultra settings is where the Vega 56 scores lower than the 1070, but the Vega 64 fights back against the 1080 and wins, but not by that much. The GTX 1060 6GB and the RX 580 are once again locked in a tight battle where the GTX 1060 wins at medium settings but the RX 580 sails past it at ultra.