Hey bud, you need a higher TC value, lower intensity, and a specified worksize. You do not need to specify look-up gap, cgminer defaults to 2.
Try --thread-concurrency 16384 and -i 13. Add the -w 256 (work size) flag.
7970s / 280x are the few cards that like the -g (gpu-thread) count @ 2. That means low intensity (13) with a high TC value.
Topic: 144 hardware errors!?!?! (Read 491 times)
Hi, on cgminer when mining cat coins i wasn't looking but after a match on cod i saw that my r9 280x had 144 hardware errors and counting! I was getting 830K/Hash though 
my config is this:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://catpool.pw:3333 -u hayat55.user1 -p hj1 -I 19 --lookup-gap 2 --thread-concurrency 11200 -g 2 --gpu-powertune 20 --gpu-engine 1020 --gpu-memclock 1500 --temp-target 70 --temp-overheat 80 --temp-cutoff 87 --gpu-fan 80 --auto-fan --device 0 --remove-disabled
my config is this:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe --scrypt -o stratum+tcp://catpool.pw:3333 -u hayat55.user1 -p hj1 -I 19 --lookup-gap 2 --thread-concurrency 11200 -g 2 --gpu-powertune 20 --gpu-engine 1020 --gpu-memclock 1500 --temp-target 70 --temp-overheat 80 --temp-cutoff 87 --gpu-fan 80 --auto-fan --device 0 --remove-disabled
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