No. That upgrade is not giving you much more performance.
Q6600 is good OC cpu. I did have Q9300 but then I did sell it away.
I did get 1366 960 + sabertooth. Now I did upgrade that to 3930k + gigabyte mobo. So best choice for you is maybe save bit more and go to lga 1150 or older 1155 and buy 4670k or 3570k. If you do not want to OC then good buy is Intel xeon 1230V2 / V3 butthey do not have iGPU so you need video card. http://www.youtube.com/watch?v=OcB1BIyJ5j8
Here you can look how fast your cpu is. http://www.anandtech.com/bench/product/53?vs=701
Looks fast.. ^^
Maybe this is better. http://www.tomshardware.com/reviews/ivy-bridge-wolfdale-yorkfield-comparison,3487.html
Here is gaming and aplication performance. http://www.tomshardware.com/reviews/ivy-bridge-wolfdale-yorkfield-comparison,3487-20.html