More detail on the reason the MacBook Pro is limited to 16GB

Last week, MacRumors ran this post, which focused on an email exchange between a reader and Phil Schiller explaining the 16GB memory limitation on the MacBook Pro:

Question from David: The lack of a 32GB BTO option for the new MBPs raised some eyebrows and caused some concerns (me included). Does ~3GBps bandwidth to the SSD make this a moot issue? I.e. memory paging on a 16GB system is so fast that 32GB is not a significant improvement?

Schiller’s answer: Thank you for the email. It is a good question. To put more than 16GB of fast RAM into a notebook design at this time would require a memory system that consumes much more power and wouldn’t be efficient enough for a notebook. I hope you check out this new generation MacBook Pro, it really is an incredible system.

Over the weekend, this post hit the front page of Reddit’s Apple forum:

So, a lot of people have been disappointed at the lack of a 32gb option.

Apple’s statement is true, but lacks detail.

The true reason behind the lack of 32gb or ddr4 is intel. Skylake does not support LPDDR4 (LP for low power) ram. Kabylake is set to include support, but only for the U category of chips. So no LPDDR4 support for mobile until 2018 I think.

I’m no memory expert. This sound right? It jibes with Phil Schiller’s explanation, just more specific.