Quote from: xref on February 28, 2014, 04:22:16 PM

Who ever using 290, here how you get 455mh/s without any increased voltage/power

EDIT IT to match the number of GPUs you are using !!

"intensity" : "14",
"vectors" : "2",
"worksize" : "256,256,256",
"kernel" : "keccak,keccak,keccak",
"lookup-gap" : "0,0,0",
"gpu-threads" : "1,1,1",
"thread-concurrency" : "0,0,0",
"gpu-engine" : "1100,1100,1100",
"gpu-fan" : "70",
"gpu-memclock" : "625,625,625",
"gpu-memdiff" : "0,0,0",
"gpu-powertune" : "0,0,0",
"gpu-vddc" : "0.000,0.000,0.000",
"temp-cutoff" : "95,95,95",
"temp-overheat" : "92",
"temp-target" : "89",
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "120",
"failover-only" : true,
"failover-switch-delay" : "5",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"log" : "5",
"log-dateformat" : "0",
"no-pool-disable" : true,
"no-submit-stale" : true,
"queue" : "0",
"scan-time" : "10",
"keccak" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}

IF this been useful for you, feel free to donate
BTC: 1MHLa9iYEJFtsLkAW9HbtTtHkE5amgrpiL
LTC: LbKEAb59fCM54Nxi1PsCA1WrXoxKXsdddU
MAX: mNZnxSVBW8dh4rRV8EombWKo6kmwm9gc8t

can you post full conf?