specs:
mobo: msi Z87a G-65 gaming
cpu: intel G3220 (1155)
OS: windows 8 pro
GPU: 3x Asus R9 280x DC 2 TOP version 1
PSU: Zalman 1250W 80plus platinum
Drivers: 13.11 beta 9.5 SDK v2.7
Cgminer: 3.7.2 , 3.3.1
Cgwatcher 1.3.5
config:
cgminer --scrypt -o asia.middlecoin.com:3333 -u -p x -g 2 -w 256 -d 0 -d 1 -d 2 -I 13,13,13 --thread-concurrency 8192,8192,8192 --gpu-engine 1120,1120,1120 --gpu-memclock 1800,1800,1800, --gpu-fan 100,100,100 --temp-cutoff 95,95,95 --temp-overheat 90,90,90 --temp-target 78,78,78
*cards running @ 770kh/s but after few minutes GPU 0 becomes sick/dead only reaching 80degrees temp.
*tried to interchange GPU slots but no improvement.
*always in n-1 situation where n = the number of cards I start with.
*tried to lower clock settings but still the same. still getting sick/dead GPU on 0
please help. will mine for 24hours paying out on your bitcoin address as bounty via middlecoin.
this: -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-engine 1035 --gpu-memclock 1500 --auto-fan --temp-cutoff 95 --temp-overheat 75 --auto-gpu
when a gpu gets sick it's because your HW (hardware errors) get too many, usually it's because of overclocking but I've come to believe it's mostly due to wrong thread conccurency. if that doesn't work do this:
-stop cgminer
-go to cgminer folder and delete ALL scryptXXXXXX.bin files
-go to your sh file (bat for windows) and put a simple command to start cgminer
eg: ./cgminer --scrypt -o pool -u user -p pass -I 13 -g 2 -w 256
-wait until cgminer connects to the pool and gets work
-stop it again
-go back to folder and look for the newly created scryptXXXXX.bin file, in it's name there should be tcZZZZ maybe 5 Z's, that's the correct thread concurrency you should be working at. start building around that.
-I only use 280x and all of mine work @ 8192 or 8128 so it should be one of those.
also do you use these ?
export DISPLAY=:0
export GPU_MAX_ALLOC_PERCENT=100
export GPU_USE_SYNC_OBJECTS=1
change export to SETX if you're running windows.
enjoy your newly stable rig
