Dell Precision 5550 is the full-on refresh of the Precision 5540 in the same vein as the XPS 15 9500, but performance hasn't really changed - NotebookCheck.net News
Dell Precision 5550 Workstation Review: The XPS 15 For Professionals - NotebookCheck.net Reviews
Round-up: Lenovo, Dell and HP's 2020 mobile workstations | CG Channel
Dell Precision 5550 Workstation Review: The XPS 15 For Professionals - NotebookCheck.net Reviews
Dell Precision 5550 Workstation Review: The XPS 15 For Professionals - NotebookCheck.net Reviews
Dell Precision 7550 Mobile Workstation Review: The Antithesis To The Precision 5550 - NotebookCheck.net Reviews