AMD's Radeon RX 500-series graphics cards are a faster, better Polaris for new PCs

Surprise! AMD revealed a fresh lineup of graphics cards on Tuesday, and the Radeon RX 500-series is a perfect complement to the company's new Ryzen 5 processors. What they aren't, however, are AMD's hotly anticipated Vega GPUs. Instead, the Radeon RX 500 series are based on the same Polaris graphics processors as the Radeon RX 400 series launched last year, with the exception of a new low-end GPU focused solely on e-sports and home theater PCs. "Polaris refined and evolved," as AMD calls it.