I am getting 860 Kh/s with the following config:

"gpu-fan" : "42-75",
"gpu-engine" : "950-990",
"gpu-memclock" : "1250",
"auto-gpu" : true,
"auto-fan" : true,
"temp-cutoff" : "85",
"temp-overheat" : "83",
"temp-target" : "81",
"intensity" : "19",
"worksize" : "256",
"thread-concurrency" : "24550",
"kernel" : "scrypt",
"api-port" : "4028",
"expiry" : "120",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"scrypt" : true,
"shares" : "0",

I would love to see other peoples config file.