That PSU isn't very good at all. It has a measly 192 watt maximum on the 12v rail, which I don't believe is enough for a system containing the rx 480. the CPU won't be compatible with the motherboard too.
Is this a new build? Or are you upgrading a current build? What CPU and GPU do you currently have?
Also, the G4560 is the better buy, with only a slither less performance. The newer RX 580 would also be better if you can get it for the same price or less.