I still have to say xeon is not as good. look at the third link you post. the i7 4770k performs faster than both xeon's and they are at much higher power usage. even the wimpy A10 performs just as great as the xeon's and is much cheaper.
not saying that they are completely imposible to run games on and cant make a good computer with one, but saying that there are better solutions than xeon out there.
Ignore turbo core for a second because any good overclocker will turn it off anyway. lets say I get my 4770k to 4.0 ghz and the turbo of the xeon is only 3.8. turbo core shuts off other cores to feed power to single core. since xeon and i7 have same IPC and i7 is running faster clock it is perfectly logical that single core will be faster in the i7 thanks to its OC. now take into thought that i7 still has all its cores on. now the xeon is blown out of the water.
anand tech's benchmark shows that the i7 is faster at stock speeds now if we add a miserly 10% to it we are 15 to 20% ahead! the overclock makes all the difference and is why you don't see a single pc manufactor using xeon cpu's in desktop computers today. (except apple and we will forget about those tards for a bit).
and as a final statement the xeon in those benchmarks was over $2000 and was getting beat in almost every benchmark for gaming by a $330 i7. they also used 150W and the i7 only used 84W. xeon is fast at what It was made for but it is not made for gaming or streaming. quite simply do like everyone else who has built a streaming PC get an i7 4770k or go cheap and get an amd FX 8350.
I personally have an 8350 and love the streaming ability that it holds for me.
thanks for the solution gunpoint