A Graphics comparison via the Phoronix Test Suite.
Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 240GB OCZ VERTEX3, Graphics: Sapphire AMD Radeon HD 6870 1024MB, Audio: Realtek ALC1150, Monitor: SyncMaster, Network: Intel Connection
OS: Ubuntu 15.04, Kernel: 4.1.1-040101-generic (x86_64), Desktop: Unity 7.3.2, Display Server: X Server 1.17.1, Display Driver: radeon 7.5.99, OpenGL: 3.3 Mesa 10.7.0-devel (git-d9ab95b 2015-07-06 vivid-oibaf-ppa) Gallium 0.4, Compiler: GCC 4.9.2, File-System: ext4, Screen Resolution: 2560x1600
Processor Notes: Scaling Governor: intel_pstate powersave
Graphics Notes: EXA
Changed Graphics to Sapphire AMD Radeon HD 6950 2048MB.
Changed Graphics to XFX AMD Radeon HD 7950/8950 OEM / R9 280 3072MB.
Changed Graphics to XFX AMD Radeon R9 290 4096MB.
Graphics Change: GLAMOR
Changed Graphics to MSI AMD Radeon R9 270 4096MB.
This test calculates the average frame-rate within the Valley demo for the Unigine engine, released in February 2013. This engine is extremely demanding on the system's graphics card. Unigine Valley relies upon an OpenGL GL3 Core Profile context. Learn more via the OpenBenchmarking.org test page.
Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 240GB OCZ VERTEX3, Graphics: Sapphire AMD Radeon HD 6870 1024MB, Audio: Realtek ALC1150, Monitor: SyncMaster, Network: Intel Connection
OS: Ubuntu 15.04, Kernel: 4.1.1-040101-generic (x86_64), Desktop: Unity 7.3.2, Display Server: X Server 1.17.1, Display Driver: radeon 7.5.99, OpenGL: 3.3 Mesa 10.7.0-devel (git-d9ab95b 2015-07-06 vivid-oibaf-ppa) Gallium 0.4, Compiler: GCC 4.9.2, File-System: ext4, Screen Resolution: 2560x1600
Processor Notes: Scaling Governor: intel_pstate powersave
Graphics Notes: EXA
Testing initiated at 7 July 2015 13:32 by user phoronix.
Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 240GB OCZ VERTEX3, Graphics: Sapphire AMD Radeon HD 6950 2048MB, Audio: Realtek ALC1150, Monitor: SyncMaster, Network: Intel Connection
OS: Ubuntu 15.04, Kernel: 4.1.1-040101-generic (x86_64), Desktop: Unity 7.3.2, Display Server: X Server 1.17.1, Display Driver: radeon 7.5.99, OpenGL: 3.3 Mesa 10.7.0-devel (git-d9ab95b 2015-07-06 vivid-oibaf-ppa) Gallium 0.4, Compiler: GCC 4.9.2, File-System: ext4, Screen Resolution: 2560x1600
Processor Notes: Scaling Governor: intel_pstate powersave
Graphics Notes: EXA
Testing initiated at 7 July 2015 12:05 by user phoronix.
Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 240GB OCZ VERTEX3, Graphics: XFX AMD Radeon HD 7950/8950 OEM / R9 280 3072MB, Audio: Realtek ALC1150, Monitor: SyncMaster, Network: Intel Connection
OS: Ubuntu 15.04, Kernel: 4.1.1-040101-generic (x86_64), Desktop: Unity 7.3.2, Display Server: X Server 1.17.1, Display Driver: radeon 7.5.99, OpenGL: 3.3 Mesa 10.7.0-devel (git-d9ab95b 2015-07-06 vivid-oibaf-ppa) Gallium 0.4, Compiler: GCC 4.9.2, File-System: ext4, Screen Resolution: 2560x1600
Testing initiated at 7 July 2015 10:16 by user phoronix.
Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 240GB OCZ VERTEX3, Graphics: XFX AMD Radeon R9 290 4096MB, Audio: Realtek ALC1150, Monitor: SyncMaster, Network: Intel Connection
OS: Ubuntu 15.04, Kernel: 4.1.1-040101-generic (x86_64), Desktop: Unity 7.3.2, Display Server: X Server 1.17.1, Display Driver: radeon 7.5.99, OpenGL: 3.3 Mesa 10.7.0-devel (git-d9ab95b 2015-07-06 vivid-oibaf-ppa) Gallium 0.4, Compiler: GCC 4.9.2, File-System: ext4, Screen Resolution: 2560x1600
Processor Notes: Scaling Governor: intel_pstate powersave
Graphics Notes: GLAMOR
Testing initiated at 6 July 2015 21:15 by user phoronix.
Processor: Intel Core i7-5960X @ 3.50GHz (16 Cores), Motherboard: Gigabyte X99-UD4-CF, Chipset: Intel Xeon E5 v3/Core, Memory: 16384MB, Disk: 240GB OCZ VERTEX3, Graphics: MSI AMD Radeon R9 270 4096MB, Audio: Realtek ALC1150, Monitor: SyncMaster, Network: Intel Connection
OS: Ubuntu 15.04, Kernel: 4.1.1-040101-generic (x86_64), Desktop: Unity 7.3.2, Display Server: X Server 1.17.1, Display Driver: radeon 7.5.99, OpenGL: 3.3 Mesa 10.7.0-devel (git-d9ab95b 2015-07-06 vivid-oibaf-ppa) Gallium 0.4, Compiler: GCC 4.9.2, File-System: ext4, Screen Resolution: 2560x1600
Testing initiated at 6 July 2015 18:31 by user phoronix.