Sager NP7339 13" and Sager NP2740 14" can both be configured with 16GB. I believe Sager is a Clevo reseller like System76.
Re:Dell XPS 13 Developer Edition
by more_original on Wednesday April 08, 2015 @12:04PM
(#9341729)
There's also the T450.
MBP Chromebook Pixel System76 Galago
Anything else that even exists?