HOWTO:Nvidia AGP FastWrites and Side Band Addressing Introduction This guide is largely inspired to a wonderful guide of the Gentoo Forums (and wiki) ( and I would really thank the user elboricua who wrote the original guide. Unfortunately Gentoo and Ubuntu do not share the same configuration files therefore I couldn't port the entire guide to Ubuntu. You can find the original guide for Gentoo here: Nvidia Driver AGP FastWrites and Side Band Addressing The purpose of this guide is to give you a performance boost which could help you in 3d applications such as videogames. Requirements By default the nvidia drivers do not enable AGP FastWrites or Side Band Addressing. This tip is a quick and easy way to turn it on. To enable fastwrite you must have a motherboard that supports it, and have it turned on in the BIOS. Most AMD boards have fastwrite capability. I am not sure about Pentium based boards. You need a kernel compiled with support for agpgart...