The Modern 15 is more than just an enlarged version of the Modern 14. Though they may share similar chassis styles and materials, their motherboards are completely different for some notable changes in port options, expansion options, and overall performance between them.
https://www.notebookcheck.net/The-MSI-Modern-15-has-dual-channel-RAM-while-the-Modern-14-is-stuck-in-single-channel-mode.452922.0.html
What about the recent models of the Modern 14? I'm considering the MSI Modern B11MOU model, but there's no info on RAM channels. How do I check this?