Intel Core i5-2520M Sandy Bridge testing with HD 3000 graphics when comparing Ubuntu 13.10 with all of the latest Saucy packages and of the mir-team PPA as of 27 June. Comparing the performance of Intel OpenGL graphics with just the X.Org Server and no Mir/unity-system-compositor to then that of when the Unity desktop is running over XMir. Benchmarking by Michael Larabel for a future article on Phoronix. More tests to come.