6 Days straight so far, no issues here. X11mod
280x > 270 > 270 > 270

Hi,
Mind to share your 280x config? Which 280x you using? Also Windows and AMD driver version..
The sgminer is that the version you downloaded from first post?

Nice time, but 280x can make more ~0.2mhs on x11 ofc.
Sapphire 280X w/ Stilt BIOS Dual-X Windows 8.1 x64, 14.6 Drivers @ 1150 mV using TRIXX. My card is subborn so that's why it's only hashing at that rate. And yes I think I'm using sgminer version from the first post, I don't remember
First values are the 280x
"intensity" : "18,17,17,17",
"thread-concurrency" : "8192,6401,6401,6401",
"lookup-gap" : "2",
"gpu-threads" : "2",
"worksize" : "256,128,128,128",
"expiry" : "1",
"queue" : "1",
"gpu-engine" : "1120,1120,1120,1110",
"gpu-memclock" : "1500,1500,1500,1500",