Bought new pc today. Did some OC. Currently running on 4,4ghz stable on 1,255vcore. Temps are around 65-70stable on Noctua NDH14.
Im quite satisfied. It performs +- same as 3930k on stock clock.
For comparison, my another pc with 2600k is doing 4:33 on 4,4ghz. Those new Haswells are great at stock clock in terms of power consumption/performance ratio but overclocking is meh.
As you can see, 2years old SB performs very well at relatively "low" clock. I can push it to 4,6 easily.
So for those, who have SB and wants to upgrade to Haswell - just decide. I think its not worth. Wait on new generation or go to 3930k if you want maximum performance. But note that 4770k can perform +- same at 4,4ghz as 3930k on stock clock BUT if you push 3930k higher, power consumption is around 500W which is insane.
For example, 4770k at 4,4 eats +180W at plug. 3930k eats same at stock speed but pushing it higher can raise your electricity bills. Especially with one or two powerful GPU in rack.
BTW. here is the result :
Corona Renderer Alpha 4 benchmark scene
Living room 100 passes
Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
Time: 0:4:14, Rays/s: 5,003,488