Undoubtedly,the newly-added AVX is the most important improvement for Sandy Bridge,as AVX improve vector processing performance to 256bit,and floating performance increases drastically,compared with SSE,the speed get to a new stage.
I've been told that adding a discrete graphics card to a 1155 system will disable the graphics functionality of the Sandbridge CPU. Does this mean one looses the AVX functinality or does this fall under the domain of the CPU functionality?