A comparison of several (eight) different ATI/AMD Radeon graphics cards across several generations under Linux. Comparing the "out of the box" Ubuntu 12.04 open-source Radeon graphics performance to using the fglrx/Catalyst driver found in the Ubuntu Precise repository. Additionally, then running tests of the latest Linux 3.4 / Mesa 8.1-devel / xf86-video-ati / libdrm Git DDX from early May. Also then using this latest code while setting radeon.pcie_gen2=1 for PCI Express 2.0 Radeon support and ColorTiling / ColorTiling2D from the xorg.conf for proper 2D color tiling on these R600 Gallium3D driver cards. For all open-source Radeon testing SwapbuffersWait was disabled. Testing for a future article on Phoronix.com by Michael Larabel.