4 ms·

If it was all about battery savings, then why not use DDR4? DDR4 is more power efficient [1] [1] http://www.memcon.com/pdfs/proceedings2013/track2/Designing_fo

• uptown 10y ago
  Cost. Margins. Their current price point is already an increase. Not sure what using DDR4 would do to that but presumably newer tech translates to higher costs.
• nodamage 10y ago
  Your link compares DDR4 against DDR3, but you should be comparing DDR4 against LPDDR3.
  • kornholi 10y ago
    Why not LPDDR4 against LPDDR3? LPDDR4 is also more efficient and has better density.
    • nodamage 10y ago
      Skylake does not support LPDDR4, nor does Kaby Lake (except with their ultra-low power chips). I don't think we're going to see 32 GB RAM in the ultrabook category until LPDDR4 is supported by Intel in their mobile-class processors. Edit: AnandTech suggests that LPDDR3 is 25-30% more power efficient than DDR4. (http://www.anandtech.com/show/6326/additional-details-on-microns-ddr3lrs-ddr4rs-and-other-memory http://www.anandtech.com/show/6326/additional-details-on-mic...)
      • wila 10y ago
        That might be so, but the macbook air is the ultrabook series and the mac book pro should be the work horse series.
      • behrangsa 10y ago
        I have a Dell Precision 5510 that supports up to 32GB of RAM and also has Skylake Mobile Xeon. Alas, it is plagued with tons of issues.