Wow...AMD has basically just released hot clocked refreshes of the old 470/480 series that are maybe 3-10% faster but use way more power
The RX580's look like they are using 30-60W more power than a 480 just to squeeze enough performance out to look better than a 1060 6GB

Now everyone can run out and get a new RX 580 card that requires more voltage, produces more heat and has higher power consumption.
How long until Vega drops?
Edit: adjusted power consumption to be more accurate