AMD

Advanced Micro Devices, Inc. (AMD) is x86 intruction set, motherboard chipsets and their own line of GPUs. Later AMD created amd64, which is the 64-bit equivalent instruction set of the x86.]]

Available software and articles
From Gentoo standpoint this wiki covers the following AMD related articles among others:

Graphics drivers

 * Useful for older graphics adapters.
 * No longer supported by Gentoo or AMD.
 * Not (yet) supported by Gentoo.
 * Not (yet) supported by Gentoo.
 * Not (yet) supported by Gentoo.