Pros: This processor is amazingly good, and it's not even the real thing (K). I would not have minded paying the extra 30$ for the K one, but I never overclock my gear so I don't really need it. The S version is still a BOMB. I have absolutely no regret about buying this over a 4th gen i5.
Summary: I purchase this specific model of processor (i7-4770S) but I received another model instead (i5-4570S) I don't live in US and I just realized that when I was upgrading my PC. It's a bad thing that I received the wrong product, but at least Amazon gave me a refund of the difference between these two models. I have a friend in US, I will buy it again and delivery to him, when he get back to my country I'll get the processor.
Summary: I think this CPU is good. But I can clearly review 10 years later. Next 2-3 years we may see changes of Computer style. I'm not sure how much we stick with desktop PC at home. I think this CPU can accept future OS ten years later.
Summary: I am using it on full load, running 8 processes in parallel to take advantage of hyper-threading. I am not doing any over-clocking. With the stock cooler the temperatures on the CPU were reaching 80C. This temperature might be exceeding the tmax spec. The system shut down once with kernel panic and my guess this was because of the overheating. I had to buy another cpu cooler to make this work (cooler master T4). With the new cooler the temperatures reach 60C.
Summary: Been rock solid since I fired it up, noticeable speedup for single thread programs. Energy usage is amazing - total build uses 100W less that the previous. Passed my burn in test with flying colors (x264 10bit encode of 1080p content over the course of 5hrs) Full tilt - runs hot, but no hiccups with the stock fan cooling things, and promptly clocks down at idle.