Hello!
I have 2 R9 280X and a R9 290 in my rig. The 290 is hashing like a camp! But both 280X are hash horrible with 500-600 khash/s each.
The thing is, that with a diffenrent system on another harddrive they are hashing okay (~670-700).
I'm using the same cgminer, the same hardware, the same drivers, the same os and the same settings but i get different results. I can't just use the better system because that is my desktop system.
I'm using a Powercolor and a Sapphire.
OS: Win 7 Ultimate with 4 GB Ram
MB: ASrock 990 Extreme3
Driver: Catalyst 13.12 (Beta did the same thing)
MSI Afterburner settings:
GPU Powertune: 20
Core Clock: 1000
Mem Clock: 1400(1500 didn't change much)
My CGminer settings:
{
"pools" : [
{
"url" : "stratum+tcp://eu.multipool.us:7777",
"user" : "Valansch.1",
"pass" : "x"
}
],
"device" : "0-1",
"intensity" : "13",
"vectors" : "1",
"worksize" : "256",
"lookup-gap" : "2",
"thread-concurrency" : "8192",
"api-port" : "4028",
"gpu-threads" : "2",
"log" : "5",
"queue" : "1",
"scan-time" : "30",
"scrypt" : true,
"kernel" : "scrypt",
"kernel-path" : "/usr/local/bin"
}
Changing these settings didn't seem to do much, it rather seems random, sometimes ill get 100 less somthimes ill get 100 more -.-
Spotting any mistakes i could have made would be very appreciated