Gigabyte R9 270 Setup - 491 KH/s STABLE!!

"xintensity" : "4",
"worksize" : "256",
"lookup-gap" : "2",
"gpu-threads" : "2",
"thread-concurrency" : "8193",
"gpu-engine" : "1150-1150",
"gpu-fan" : "0-100",
"gpu-memclock" : "1498",
"temp-cutoff" : "94",
"temp-overheat" : "88",
"temp-target" : "74",
"temp-hysteresis" : "3",
"api-mcast-port" : "4028",
"expiry" : "1",
"log" : "5",
"no-pool-disable" : true,
"queue" : "0",
"scan-time" : "1",
"scrypt" : true,
"kernel-path" : "/usr/local/bin"