Hi guys. With 10.0.1642.5 amdocl.dll from 15.4 beta win32 in sgiminer folder my 5850 hash  around 1.6 mh/s. (my system win 7 64bit  driver installed 14.7 version 14.200.1004.0
 and this config
           r9 280x, 5850
"intensity" : "18,17",
"worksize" : "32,32",
"kernel" : "Lyra2REv2",
"thread-concurrency" : "8192",
"algorithm" : "Lyra2REv2",
"no-submit-stale" : true,
"lookup-gap" : "2",
"gpu-threads" : "2,2",
"gpu-memclock" : "0",
"gpu-memdiff" : "0",
"gpu-powertune" : "0",
"gpu-vddc" : "0.000",
"temp-cutoff" : "85",
"temp-overheat" : "82",
"temp-target" : "67",
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "28",
"failover-switch-delay" : "60",
"gpu-dyninterval" : "7",
"gpu-platform" : "0,1",
"log" : "20",
"no-pool-disable" : true,
"queue" : "1",
"scan-time" : "7",
"tcp-keepalive" : "30",
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin",
"verbose" : "true"
}


make a bin for r9 280x with system keep it. Then make a second bin with amdocl.dll from 15.4 32bit. Make sure you have the same intesity. something like this