use ati driver 13,12
-> Ok with that
For 7970 (14,5 kH/s / card)
and for 7950 (7,5 kH/s / card)
"nfmin" : "4",
"nfmax" : "30",
"worksize" : "128",
"lookup-gap" : "6",
"buffer-size" : "2590",
"rawintensity" : "7752",
"gpu-threads" : "1",
No HW errors with those settings
_TheQueen74