A while ago I read an article that mentioned something they called "hybrid" crossfire/sli.
Now I don't know if this is a common or all generally accepted term for this but they described the process of using a dedicated graphics processor (dGPU) and integrated graphics processor* (iGPU) in crossfire/sli.
* Note that this is different from Lucid's Virtu MVP as that uses a combination of command optimization and unused CPU cycles (this last bit would be different then an iGPU, no?)
More or less I am asking if this is actually a technology or if I am misreading something somewhere, and if it is, has it been tested on Ivy Bridge? I would imagine that the IB iGPU could actually be useful for "hybrid" xfire/sli with low/mid-range dGPUs, but probably would only cause a bottleneck with high end dGPUs.