For those, who need comparison data and inerested in Claymore miner progress 
GPU v8 v7 v6 v5 v4 v3 v2
7870 110 95 65 55 40 35 32
7950 180 155 125 95 70 45 38
7970 200 165 120 95 65 55 48
270x 115 100 67 55 40 35 32
280x 200 165 125 90 65 60 51
285 125 110 85 70 40 36 32
RX 470 4Gb 175 155 145 120 70 60 50
GPU v8 v7 v6 v5 v4 v3 v2
7870 110 95 65 55 40 35 32
7950 180 155 125 95 70 45 38
7970 200 165 120 95 65 55 48
270x 115 100 67 55 40 35 32
280x 200 165 125 90 65 60 51
285 125 110 85 70 40 36 32
RX 470 4Gb 175 155 145 120 70 60 50
Could you share RX 470 config. Mine just 152 on V8.
What level -i are you using and are you using the -nofee switch?
I can get 170h/s with fee enable and about 158 with the fee switched off using -i6.