The higher-end SKUs will utilize 8-phase and 6-phase graphics and processor regulators, respectively, with the promise of better performance sustainability. The new chassis is 11 percent thinner than the Alienware m17 R1 while weighing about the same. Optional Tobii eye-tracking returns alongside a narrower "chin" bezel.
https://www.notebookcheck.net/Alienware-m17-R1-is-barely-six-months-old-gets-completely-refreshed-with-even-thinner-Alienware-m17-R2.422290.0.html