Settings for Sapphire reference 290 and Sapphire 290 Tri-X. Any advice would be appreciated.

Reference:

"device" : "1",
"intensity" : "13",
"worksize" : "512",
"lookup-gap" : "2",
"gpu-engine" : "947",
"gpu-memclock" : "1250",
"shaders" : "2560",
"thread-concurrency" : "10176",
"expiry" : "30",
"gpu-threads" : "1",
"scan-time" : "1"

Tri-X:

"device" : "2",
"vectors" : "1",
"intensity" : "13",
"worksize" : "512",
"lookup-gap" : "2",
"gpu-engine" : "1000",
"gpu-memclock" : "1300",
"shaders" : "2560",
"thread-concurrency" : "10176",
"expiry" : "30",
"gpu-threads" : "1",
"scan-time" : "1"

Bat file:

setx GPU_MAX_ALLOC_PERCENT 200
setx GPU_USE_SYNC_OBJECTS 1
COLOR 0A
vertminer.exe


I'm gettiing round 320kh and a WU of 290 on each card. I got the TC by multiplying shaders and subtracting 64. The reference runs at 74c and the Tri-X at 62c. High TC or intensity won't load the kernel and disables the cards. Overclocking seems to crash and I'm using vertminer0.5.3. No HW errors yet and hardly any rejects. Not sure where to go from here. I have 8GB RAM installed.