Thank you
I changed conf my rig 2*280x on SMOS like advised, now the resul is:

   Temp    Fan% (rpm)    Load  Rate     Accept/Invalid   Status
0: 70c-    61% (2397+)   99%   150 Khs  1253/17 (1.34%)  stratum+tcp://ultra.nit
1: 71c+    48% (1739-)   99%   140 Khs  1219/21 (1.69%)  stratum+tcp://ultra.nit
ro.org:3337
Total: 290 Khash/s  2472 accepted, 38 invalid (1.51%)

But pool shows 187 kh in average

what could be wrong? How to see hw errors in smos?

the .conf file:


{
"pools" : [
        {
                "url" : "stratum+tcp://ultra.nitro.org:3337",
                "user" : "xxxx.x",
                "pass" : "xxxxx"
        }
],
"api-listen" : true,
"intensity" : "13",
"worksize" : "64",
"auto-fan" : true,
"temp-cutoff" : "85",
"temp-overheat" : "75",
"temp-target" : "73",
"expiry" : "1",
"gpu-dyninterval" : "7",
"log" : "5",
"queue" : "0",
"retry-pause" : "5",
"scan-time" : "30",
"scrypt-jane" : true,
"sj-time" : "1388361600",
"sj-nfmin" : "4",
"sj-nfmax" : "30",
"temp-hysteresis" : "3",
"shares" : "0",
"thread-concurrency" : "24000",
"gpu-thread" : "1",
"gpu-engine" : "1070",
"sharethreads" : "32",
"lookup-gap" : "2",
"gpu-powertune" : "20",
"gpu-memclock" : "1500"
}