Currently running 6 r9 290s with absolutely no tweaking and I'm getting 135 total. The rigs are reporting 20-25 per card, pool is reporting about 22.5 per card, except I'm only getting paid 75% of that.

So basically I'm netting about 16.83Mh per card as far as initially projected profit goes that's about 56.1% of expected returns from mining of where I've heard claims of people being.