Run mine under clocked a bit due to bad fan design causing heat build up on these junky Gigabyte cards and still get 550 out of each. Running 900 clock and 1250 memory keeps it at 1.125v instead of 1.25v. My card is voltage locked and any anything above those speeds puts it in a high power mode. The power draw difference for the pair plus rest of the computer is 550 watts at 1.125v and 750 watts at anything above those settings 1.25v. Can set fans are at 65% can go to 60% with no issues.
Convert this to command line easy enough but this works great for me. First card is a 6570 and used to power my monitors. Getting 1.2Mh/s with this and can ramp up to 1.4 if I want to pay the power and put up with the noise of 100% fans.
"intensity" : "14,19,19",
"vectors" : "1,1,1",
"worksize" : "64,256,256",
"kernel" : "scrypt,scrypt,scrypt",
"lookup-gap" : "2,2,2",
"thread-concurrency" : "6016,21712,21712",
"shaders" : "0,1792,1792",
"gpu-engine" : "500-722,600-900,600-900",
"gpu-fan" : "0-85,0-65,0-65",
"gpu-memclock" : "1000,1250,1250",
"gpu-memdiff" : "0,0,0",
"gpu-powertune" : "0,20,20",
"gpu-vddc" : "0.000,1.087,1.087",
"temp-cutoff" : "95,95,95",
"temp-overheat" : "85,85,85",
"temp-target" : "75,78,78",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "1",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "60",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
