i7 mysterious boost with 3 sticks of ram

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Hi,

So an IT friend and i were talking i7 Haswell 4770k.

He mentioned that the CPU had some sort of special affinity for 3 sticks of ram, giving it a huge performance boost. I was also told the processor would do this without a triple channel mobo, something to do with the controller being in the cpu idk.

Of course i had to go do my research and found vague confirmations.

So the big questions are what is the performance boost, what causes it, if so do i need a triple memory channel mobo, why 3?

Im just looking for specifics on this.

I read this link and it quoted "optimal performance" but i dont want to pigeonhole this just yet until i can find some benchmarks or something.
http://www.tomshardware.com/forum/292122-28-core-memory

 

[RaDiKaL_]

As clarified in the link you posted, the triple channel configuration was only on i7 9xx series (Nehalem), after that Intel returned to Dual Channel settings, there are no secondary boost(beyond having additional RAM) from using 3 of them regardless of dual /triple configuration in the memory controller.