Yes, xintensity replaces/overrides intensity. Are you using a version of cgminer (karoth's), or sgminer that supports.xintensity?
Apparently not! Where can I find a compiled version of SGMiner that can work with this voodoo?
I'm running a 290 (Sapphire Tri-X OC version), but I'm not really able to get above 850ish KH/s (Closer to 860 I guess). I tried a variety of settings (including the ones you posted from your .conf file) to no avail, except the xI, as I was apparently doing it wrong in not actually having a compatible mining software.
My card runs really cool! (at 1040/1500) Never going above 72 degrees (mining next to my 280x, which is hashing away at 760kh/s, super solid!)), so I'm really happy there, but would LOVE to get another 50kh out of 'er...
.bat file as follows:
(Device 0 is the 280x, Device 1 is the 290)
Core clock: 1040
Mem clock: 1500
-I 13,19 -g 2,1 -w 256 --thread-concurrency 8193,20481 --lookup-gap 2
With these settings I get no HW errors, and <1% failure rate on the 290 (less on the 280x). If I increase the TC, or the intensity, I start to get HW errors here and there... Any suggestions for a direction to move? I've tried various clock settings, as well as multiple TC settings. -g 1 and -g 2 don't seem to make much difference either way.