I see some peoples get about 165 sols/s +- using genoil miner with driver 16.10.3
but the card should be [8GB] ( he test with RX 470 ).
kernel : zec-sa.cl
comand :
genoil.exe -k zec zec zec zec -c zec.suprnova.cc:2142 -u user.x1222 -p xnxx -i 20 -w 64 -P 0 -f 2 -z 0
give it try!