Fedora 21 Alpha Intel Core i7-5960X testing with a Gigabyte X99-UD4-CF and Sapphire AMD Radeon HD 6870 1024MB on Fedora 21 via the Phoronix Test Suite. Sapphire AMD Radeon HD 6870: Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Haswell-E DMI2, Memory: 16384MB, Disk: 128GB Crucial_CT128MX1, Graphics: Sapphire AMD Radeon HD 6870 1024MB, Audio: Intel Wellsburg HD Audio, Monitor: SyncMaster, Network: Intel Connection OS: Fedora 21, Kernel: 3.16.1-301.fc21.x86_64 (x86_64), Desktop: GNOME Shell 3.13.91, OpenGL: 3.3 Mesa 10.3.0-rc1 Gallium 0.4, Compiler: GCC 4.9.1 20140912, File-System: ext4, Screen Resolution: 2560x1600 Xonotic 0.7 Resolution: 1920 x 1080 - Effects Quality: Ultra Frames Per Second > Higher Is Better Sapphire AMD Radeon HD 6870 . 83.87 |========================================== Xonotic 0.7 Resolution: 1920 x 1080 - Effects Quality: High Frames Per Second > Higher Is Better Sapphire AMD Radeon HD 6870 . 114.40 |========================================= Xonotic 0.7 Resolution: 1920 x 1080 - Effects Quality: Low Frames Per Second > Higher Is Better Sapphire AMD Radeon HD 6870 . 235.56 |=========================================