AMD launched an entire refresh cycle of its midrange graphics cards today. While our review focuses on the RX 580, AMD is also shipping new SKUs for the RX 460 and 470, as well as a new part, the RX 550. Let’s step through what’s changed for these chips, and what the updates mean for gamers in these market segments. RX 560 and RX 570 The RX 560 and RX 570 ...