Your biggest worry is whether or not your laptop has two DIMM slots, and that the system memory is not soldered down on the system (like in some (all newer?) XP

Your biggest worry is whether or not your laptop has two DIMM slots, and that the system memory is not soldered down on the system (like in some (all newer?) XPS 13 systems). The CPU and chipset will likely handle it just fine, it's the OEMs you have to worry about, who make crappy design decisions that prevent upgrading.