I have 20k/h with R9 270X .R9 280X the same 20k/h
May be there should be another miner for this cards
If you want to mine it with them though, I will gladly share my setting that get me more like 40K/H on a 270X.
i interest myself in your 270X setting ,should i pay some money for you?
40 Kh/s is still a waste of your time - you will spend far more in electricity then you will get coins. At current difficulty and exchange rate 40 Kh/s will be worth $0.10 before electricity. Your electric costs would far outweigh that, even in areas with cheaper electricity rates.