is it really true that you save with a 2500K which can be used for a SSD or a good video card, but if the 2500K is good, the 3570k is best and not a costly dispute, and lower power consumption.
Now, the instructions do not really have the AMD compared to Intel are: SSE4.1, SSE4.2, and AVX you can be useful if you want to edit a movie, AMD processors have a pseudo-instructions similar to those of Intel bearing the name "SSE4a" that really are not even compare with the Intel SSE4.2, all this I mean that Intel processors work much more efficient than AMD, so between the i7 3930k and FX-8150, Intel favors you, believe me, those extra $ are worth it.