The Tech Report published a review on the AMDs Radeon RX 580 and Radeon RX 570 graphics cardsed
A quote from the article:
Just under a year has passed since AMD released its Radeon RX 400-series graphics cards, and now the company is back with an improved 14-nm process at its disposal and a new series of Polaris GPUs fabricated on the new tech. We put a couple Radeon RX 500-series cards to the test to see what a clock bump buys the Polaris architecture.AMDs Radeon RX 580 and Radeon RX 570 graphics cards reviewed @ The Tech Report