Which type of computer form factor is least likely to have a socketed, replaceable processor?

The type of computer form factor least likely to have a socketed, replaceable processor is a notebook. This is primarily due to the design and engineering constraints associated with notebooks.

Notebooks are typically built to be compact and lightweight, which often requires a design that integrates components more tightly. Many notebooks use soldered processors instead of socketed ones to save space, reduce overall weight, and enhance thermal efficiency. This integration makes the construction of these devices simpler, decreases potential points of failure, and allows for a thinner profile, which is a key factor in their design.

In contrast, servers, desktops, and workstations generally have more room for expansion and can accommodate socketed processors. These systems are often designed to allow the technician to upgrade or replace components more easily, which is crucial in environments where performance needs to be adjusted over time, such as in servers handling varying loads, or workstations used for demanding applications.