ok so I've got crossfirex enabled and everything, got the bridge in place and GPU and MSI Afterburner both show crossfirex enabled, show temps on both cards ranging avg 35c per card yet shows 0% usage on card two. Running 2 XFX Radeon 5670's on a Crosshair V formula, 650w 80 plus bronze PSU. Do you think my PSU is too weak? or is there some kinda configuration that i might have not done? This is my first crossfirex rig, so not very knowlegable about it.