After attending several sessions and seeing the demonstrations in the show floor, I still stand firm with my belief system that:
(DDR4 + SoC) = RIP
There is no more room for DDR4 into SoC market, it will continue to be standard memory for Server and PCs in multi-drop buses for 2 or 3 chipsets. But the level of expertise require to design, bring up and validate DDR4 memory interface it far more complicated that any SoC interface out there (even harder than 10G-KR).
I said this back in 2009 and I continue to stay firm on this matter. There is really no life for DDR4 in SoC other than Hype!
This brings us to the key questions, what would all the Next Gen SoC use for external Memory interface?
(reply if you think u know the answer!!)