r9

R9 is a designation used in various industries to label a model, revision, or product line, and does not refer to a single concept. In computing, it is most closely associated with AMD's Radeon R9 family of graphics processing units, while in other contexts it may appear as an internal code or model number.

AMD Radeon R9 GPUs were released between 2013 and 2015 as part of AMD's Graphics Core Next generation. The lineup included the R9 270X and 280X targeting mainstream and high-end gaming, followed by the R9 290 and 290X with Hawaii architecture and 28-nanometer fabrication. In 2015, AMD introduced the R9 Fury and Fury X based on Fiji with High Bandwidth Memory (HBM). The R9 branding was eventually phased out in favor of the Radeon RX naming.

Outside of graphics cards, the R9 designation is used as a generic product code in other electronics, vehicles, software builds, or standards, and the exact meaning depends on the manufacturer and context. The term is often encountered in product catalogs, hardware reviews, and documentation as a model or revision label rather than a standardized specification. In some cases, it may denote a version number, a high-end tier, or a specific feature set within a broader product line. When encountering R9, the precise definition should be confirmed from the relevant manufacturer or documentation.