Vulkan and DirectX 12 expose the best the RX 480 has to offer, increasing performance by as much as 20%. Here's a few highlights of reviews with good coverage of these modern
RX 480 vs GTX 1050 Ti Game Performance Benchmarks (i5-4570S vs i5-4570S) - GPUCheck United States / USA
Rx 480 vs gtx 970 | Tom's Hardware Forum
Compare RX 480 vs GTX 1050 Ti vs GTX 1060 3GB vs RX VEGA 8 vs RX 480 - GPUCheck United States / USA