FullSpeed

Fullspeed is a term used to describe operating at the maximum speed or rate permitted by a device, system, or process. It is commonly used to express performing a task with maximal effort, as in full speed ahead or driving at full speed. The concept implies increased throughput or performance, but also higher energy use, wear, and heat generation.

The phrase derives from nautical and mechanical language, where “full speed ahead” instructed vessels to push forward at maximum thrust. It has since entered general usage to indicate aggressive progress or peak performance in various domains.

In technology, full speed can denote a defined operating state. In USB terminology, "Full Speed" refers to USB 1.1 signaling at 12 megabits per second, distinct from "Low Speed" (1.5 Mbps) and "High Speed" (480 Mbps). Some devices or ports label their capabilities accordingly, indicating compatibility with this speed tier. In other hardware contexts, manufacturers may offer a "full speed" or "turbo" mode to maximize processor, graphics, or cooling performance, at the cost of power consumption and noise.

The term also appears in everyday language and literature to convey rapid progress, often as a metaphor rather than a precise specification.

The form fullspeed as a single word is uncommon in formal writing; the two-word form or a product-specific label is more typical. See also: speed, velocity, throttle, USB Full Speed, redline.