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
Radeon RX 580 vs. GeForce GTX 1060: 27 Game Battle | TechSpot
RX 480 dominates GTX 1060 at DX12 in Battlefield 1 | TweakTown
NVIDIA GeForce GTX 1060 official performance leaked | VideoCardz.com
RX 480 vs. GTX 1060: DX12 and Vulkan Overclocked Results - MobiPicker
NVIDIA GTX 1060 3GB vs. AMD RX 480 4GB Benchmark | GamersNexus - Gaming PC Builds & Hardware Benchmarks
RX 480 dominates GTX 1060 at DX12 in Battlefield 1 | TweakTown