yea but which one 480 or 470. 470 comes at least 50 cheaper but obviusly the mining performance is worse. with which one would i get faster ROI.
50 difference for a RX 470 4G to RX 480 8G, go with the RX480 quickly,
Higher Mem would always be an advantage of course, not to mention a higher resale value compared to 4GB later on when you decided to give up mining.