in the GTx series because, with a BIOS change, they could almost always be turned into a full 4 quad card. Some X800 GTO² cards shipped with the full 4 quads already enabled, but of these some were R430 instead of R480 and weren't able to reach X850-like clock speeds. The final variations of the GTO series were the special GTO boards with 16 pipelines officially enabled, such as Powercolor's "R430"-based X800 GTO-16. Table of models References "Beyond3D: 3D Tables" by Beyond3D.Com, retrieved January 17, 2006 "Radeon X850 XT Platinum Edition Review" by Dave Baumann, Beyond3D.Com, December 1, 2004, retrieved January 17, 2006 External links "Inside ATI's R420 (architectural analysis)" by aths, 3DCenter.Org, May 4, 2004 ATI's X800 Pulls Off Another Coup in the Graphics Performance War — features, architecture and benchmarks of the Radeon X800 ATI's Radeon X700 XT graphics card — An in-depth look at the unreleased X700 XT. techPowerUp! GPU Database ATI Technologies products Graphics cards Computer-related introductions in 2004