AMD

Advanced Micro Devices, Inc., AMD is a semiconductor company. AMD is most known for producing CPUs based on x86 intruction set, motherboard chipsets and their own line GPUs. Later AMD created amd64, which is the 64-bit equivalent instruction set of the x86.

From Gentoo standpoint this wiki covers the following AMD related articles among others:
 * Graphics drivers
 * AMDGPU - open source
 * AMDGPU-PRO - closed source (not supported by Gentoo)
 * radeon - open source, for older graphics adapters
 * fglrx - old closed source (not supported by AMD anymore)
 * AMD microcode for CPUs