Ok I installed my 6th hdd as a project, had to take out the graphic cards cause they were in the way a bit from the sata connector ports. Cut the long story short, Re-installed win7 and installed 11.4 early preview drivers. Device manager under display shows 5800 series, 5900 series, 5900 series. Now I went under ccc and the option for xfire is not even there. went to gpuz, and it says xfire disabled. I went to afterburner 1.5 final build, 3 gpus are there, tested 3dmark 06 with blasted up settings, only 1 gpu is being used. gpuz shows 3 gpus but xfire is disabled, device manager shows 3 gpus. I know the voltage in my mobo's bios, the ioh voltage I think it is, if its over 1.2v, sometimes you might not even see your graphic adapter in the device manager list, its on 1.5v so its safe, even 1.75v is fine. The original xfire connector was on the before got damaged, I had another one in the other radeon box, looks like never been used, looks the same thing, it dont work. I think its a cable problem, what you guys think???? Gpuz shows correctly 3 gpus but disabled, device manage shows all 3 and msi AB shows all 3 gpus but when you do benchmark only 1 is being active. I tried to re-seat the card, no go, reverse the cable, no go, uninstall drivers, along with many 3rd party cleaning tools, re-install drivers no go, re-flash bios, all 3 gpus, no go. re-installed win7 still no go, I also tested the cards individually, 5970 by itself, under gpuz it says xfire enabled but in ccc no option for it but in gpuz it says enabled 2 gpu's. When I do all 3, when I did 3dmark 06, only 1 gpu is being active, assuming the 5870 like usual. So yes, the gpu themselves are working properly, its just xfire aint working worth crap for some reason, my take is on the cable. I even went under device manager and uninstall the 5900 series, 2 of them on the drop list and did re-install of the same exact drivers, re-boot, still the same outcome, still shows 3 gpus though but xfire is disabled. going to go sleep for a bit, will try some stuff out later.