Went from RX470 8GB > RX550 4GB for a week. These are my thoughts, opinion, and observations as someone who does not play graphically intense games. : r/Amd
Amazon.com: SAPPHIRE Radeon RX 470 11256-21-21G 4GB GDDR5 PCI-E (UEFI) (Built with Non Samsung Memory) Brown Box Version - OEM : Electronics
PowerColor Red Devil Radeon™ RX 470 4GB GDDR5 - PowerColor