my setting for EAH 6950, driver 14.4 win7 64, cgminer 3.7.2 >>> 1.560Gh/s 

{
"pools" : [
   {
           "url" : "127.0.0.1:8984",
      "user" : "xxxxxx",
      "pass" : "xxxxxx"
        }
       
],
"intensity" : "12",
"expiry" : "30",
"failover-only" : true,
"log" : "5",
"no-restart" : true,
"queue" : "3",
"scan-time" : "30",
"worksize" : "128",
"temp-hysteresis" : "4",
"blake256" : true,
"vectors" : "1",
"gpu-threads" : "2",
"gpu-engine" : "965",
"gpu-fan" : "60",
"gpu-memclock" : "895",
"temp-cutoff" : "94",
"temp-overheat" : "88",
"temp-target" : "74",
"kernel-path" : "/"
}


Lithium.config

listen=1
gen=0
rpcallowip=127.0.0.1
rpcuser=xxxxxx
rpcpassword=xxxxxx
rpcport=8984
server=1
daemon=1