,
"intensity" : "18",
"worksize" : "256",
"lookup-gap" : "2",
"gpu-engine" : "950",
"gpu-memclock" : "1250",
"thread-concurrency" : "20481",
"expiry" : "30",
"gpu-threads" : "1",
"scan-time" : "1"
}
this is my setting. I did not overclocked a lot. I got at least 420 kh/s on both of my card. that is good for me.
And that hash value is for vert miner, what card are you using and model num
dual xfx 290 (non x). I am using vertminer for it. ref xfx 290 ( with one fan).