The MacBook Pro with Touch Bar has finally landed, and some users have been turning a critical eye toward Apple’s design decisions. Now, Apple’s own Phil Schiller has personally addressed some of those concerns. Specifically, Schiller responded to an email from software developer Ben Slaney, who asked the Apple marketing chief why the new slate of MacBook Pros topped out at 16GB of RAM.
“The MacBook Pro uses 16GB of very fast LPDDR memory, up to 2133MHz. To support 32GB of memory would require using DDR memory that is not low power, and also require a different design of the logic board, which might reduce space for batteries. Both factors would reduce battery life,” Schiller said in an email to developer Ben Slaney.
According to MacRumors, it’s not the first time Phil Schiller has answered this question. In fact, it seems like he’s been defending the decision to cap the premium MacBook Pro at 16GB of RAM since the announcement of the new laptop’s specs on October 27.
“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,” Schiller wrote to another concerned potential customer in October.
So it appears the decision to cap RAM at 16GB was made based on fears over energy efficiency, and on the decision to use LPDDR3 RAM, which is unavailable in sizes larger than 16GB. In order to expand the RAM available without losing out too much on battery life, Apple would have had to use a different CPU, since Intel’s sixth-generation Skylake chips don’t support LPDDR4 RAM, which is faster and more energy efficient than the LPDDR3 standard.
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