Crossfire not working properly??

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[Zindawg]

I'm running duel AMD Radeon HD 7950's, i have xfire enabled and i know xfire doesnt work in windowed mode, but in BF3 i play full screen, on ultra i dont get any fps lag, however, CCC shows that one graphics card is at 100% use, and the other barely hits 20%... i heard that they should both be equally used around 50-60%? I read up that some USB 3.0 Turbo boost in your BIOS can effectively halve the bandwidth, making the second graphics card not do as much as it can, i tried going into my BIOS and i honestly couldnt find that option to disable, idk if that is an out of date option for older version windows or what, i got windows 7 ultimate... so yeah is this normal? is one card meant to be at 100% and then the other kicks in? or is something wrong? cheers for any input

[Zindawg]

Oh and as a result of one card being 100% use, it gets quite hot and i gotta turn the fans up, this cant be too good for the life of the graphics card, which is why i wanna find out if this is normal, thanks again

[Psych0Kyller]

Well I'm only used to nvidia cards but have you updated the display drivers recently? Because for nvidia  it disables the ski setting to update.

[Zindawg]

Yeah they have been updated

[Psych0Kyller]

Is there a setting that can enable crossfire that the driver would have disabled when u updated it

[Zindawg]

Yeah mate i've checked, crossfire is definitely enabled, the 2nd GPU does get some use, just that its as if it waits for the other GPU to get to 100%, surely it would be better for them to both work equally, and i heard that is what is meant to happen

[Alucard]

is there a crossfire profile or anything that you can change

[Zindawg]

Wow... just realised it was at 0-20% when i alt tabbed to check CCC because i alt tabbed... that cancels xfire... i had CCC open when i alt tabbed and they were both at 100%, sorry for this dumb arse post, i feel sickingly stupid atm

[Psych0Kyller]

lol well done