here is the review
http://www.tomshardware.com/reviews/core-i7-3960x-x79-sandy-bridge-e,3071-23.html
i think its not worth paying 600$ more just to get a 10 to 20fps gain in gaming, 2600k is still the best!
i still want to see the 4 core one (not released yet)
but i have to agree, that processor is a MONSTER! (also overkill)