My test on MSI RX580:
3.45Mhs on mkxminer 4.0b
3.37Mhs on teamred miner 0.3.2 (minus 3% their devfee) => effective 3.27Mhs
So my miner is 5% faster.
Same results. After deep inspection, my 7x480 miner consumes little less energy with same OC settings (about 14-16 watt from wall whole system) on MKX instead TeamRED.
winmkx, continue your work on miner and maybe you will take the 4mhs height for 480\580
