-guide-
So i followed the guide and everything worked out, except i have 3 GPU's in this machine and now it's only recognizing 2 of them (the one's in crossfire) when i disable crossfire it will only 'see' one of the GPU's, also using Phoenix 1.7.x
-k phatk2 VECTORS BFI_INT AGGRESSION=11 worksize=128 FASTLOOP=false
&
-k phatk VECTORS BFI_INT AGGRESSION=11 worksize=128 FASTLOOP=false
are 20MH/s slower than using SDK 2.3/CCC 12.1 per GPU (The onyl 2 it can see), in the device manager all of the GPU's are directed towards that folder.
I'm going to unfortunatly have to revert back and continue with 12.1/2.3
12.1/2.3 = 301MH/s
11.6 = 287MH/s
The third GPU is recognized in MSI Afterburner/Sapphire TRixx/GPU caps viewer/Windows Devices, but not GUIMiner as a usable device, i'm going to start up a thread quickly to see if i can get some information on CGMiner.
You have the wrong settings for your GPU for 11.6/2.4, and you were likely using 12.1/2.6 before, since 2.6 comes with that driver, gets installed in windows, and overrides whatever you thought you were running, and work OK with a smaller worksize.
-k phatk2 VECTORS AGGRESSION=12 worksize=256 FASTLOOP=false, plus underclock your GPU memory to 300Mhz or so. Remove the crossfire link if you are going to mine, and make sure each video card has a monitor connection (or dummy plug) plugged into it.
..or
Just install 12.1 (which installs it's SDK 2.6 runtimes), use the stock memory speeds, and with the latest Phoenix use:
-k phatk2 VECTORS4 AGGRESSION=12 WORKSIZE=64 FASTLOOP=False
On my computers running 3 cards (both CPUs are underclocked, one is a single core and one is a dual core with one core disabled) if I set the aggression higher than 10, the CPU usage jumps to a sustained ~50-60%... @ aggression level 10, it's less than 5%. Aggression level 11 is slightly faster in terms of mhash, aggression level 12 actually degrades performance. Probably depends on your CPU. Don't see why you'd want to waste a lot of extra $ running a high power CPU, though... the diff between agg 10 and agg 12 is probably a percentage point.