Hello All.
Im not a "newbie" anymore with mining, but this forum only let me to post here.
Hope some experts are reading as well.
Ok, so the issue, im posting about.
Im using cgminer for scrypt mining (3.7.2)
Im running an ATI HD 7990 card with 2 GPUs.
Its working fine, mining running smooth.
But:
Sometimes im experiencing some strange things.
Set Intensity 12 for both GPUs
and
GPU thread is on 2
so far settings for both GPUs are the same !
Even sometimes one of the GPUs (GPU0) is hashing at lower hashrate than GPU1 and its temperature is a bit higher, despite it is hashing lower.
Temp difference is about 5-6C at 75-80C level.
Im letting them up till MAX 85C, but even if they are hashing lower (set intensity 11 or 10) the temp difference is steady.
My question.
What could be the reason of temp difference and why is GPU0 is hashing lower sometimes ?
Here are my settings:
{
"pools" : [
{
"url" : "
http://fast-pool.com:3333",
"user" : "Coin_millionair.worker_DGC",
"pass" : "************"
},
{
"url" : "
http://doge.pool.webxass.de:3333",
"user" : "Coin_millionair.worker_DGC",
"pass" : "************"
},
{
"url" : "
http://doge.hashfaster.com:3339",
"user" : "Coin_millionair.worker_DGC",
"pass" : "************"
}
],
"intensity" : "12,12",
"vectors" : "1,1",
"worksize" : "256,256",
"kernel" : "scrypt,scrypt",
"lookup-gap" : "0,0",
"thread-concurrency" : "8192,8192",
"shaders" : "2048,2048",
"gpu-engine" : "0-0,0-0",
"gpu-fan" : "0-85,0-85",
"gpu-memclock" : "0,0",
"gpu-memdiff" : "0,0",
"gpu-powertune" : "0,0",
"gpu-vddc" : "0.000,0.000",
"temp-cutoff" : "85,85",
"temp-overheat" : "81,81",
"temp-target" : "78,78",
"auto-fan" : true,
"auto-gpu" : true,
"api-mcast-port" : "4028",
"api-port" : "4028",
"expiry" : "120",
"gpu-dyninterval" : "7",
"gpu-platform" : "0",
"gpu-threads" : "2",
"hotplug" : "5",
"log" : "5",
"no-pool-disable" : true,
"failover-only" : true,
"queue" : "1",
"scan-time" : "30",
"scrypt" : true,
"temp-hysteresis" : "3",
"shares" : "0",
"kernel-path" : "/usr/local/bin"
}
Should i try with some different settings ?
Expert recommendations are welcome...
Thank You in advance...