A OpenGL comparison via the Phoronix Test Suite.
Processor: AMD A10-6800K APU @ 4.99GHz (4 Cores), Motherboard: Gigabyte F2A88X-UP4, Chipset: AMD Family 15h, Memory: 15360MB, Disk: 1000GB Western Digital WD10EZRX-00L + 512GB Crucial_CT512MX1, Graphics: AMD Radeon HD 8670D 768MB (800MHz), Audio: AMD Trinity HDMI Audio, Monitor: SAMSUNG, Network: Realtek RTL8111/8168/8411
OS: Arch rolling, Kernel: 3.18.1-1-ARCH (x86_64), Desktop: GNOME Shell 3.14.3, Display Driver: radeon 7.5.0, OpenGL: 3.0 Mesa 10.5.0-devel (git-0c7f895) Gallium 0.4, Compiler: GCC 4.9.2 20141224 + Clang 3.6.0 (SVN 224901) + LLVM 3.6.0svn, File-System: ext4, Screen Resolution: 1920x1080
Kernel Notes: radeon.dpm=1
Graphics Notes: EXA
OS: Arch rolling, Kernel: 3.18.1-1-ARCH (x86_64), Desktop: GNOME Shell 3.14.3, Display Driver: radeon 7.5.0, OpenGL: 3.3 Mesa 10.5.0-devel (git-0c7f895) Gallium 0.4, Compiler: GCC 4.9.2 20141224 + Clang 3.6.0 (SVN 224901) + LLVM 3.6.0svn, File-System: ext4, Screen Resolution: 1920x1080
OS: Arch rolling, Kernel: 3.18.1-1-ARCH (x86_64), Desktop: KDE 4.14.3, Display Driver: radeon 7.5.0, OpenGL: 3.0 Mesa 10.5.0-devel (git-0c7f895) Gallium 0.4, Compiler: GCC 4.9.2 20141224 + Clang 3.6.0 (SVN 224901) + LLVM 3.6.0svn, File-System: ext4, Screen Resolution: 1920x1080
Processor: AMD A10-6800K APU @ 4.99GHz (4 Cores), Motherboard: Gigabyte F2A88X-UP4, Chipset: AMD Family 15h, Memory: 15360MB, Disk: 1000GB Western Digital WD10EZRX-00L + 512GB Crucial_CT512MX1, Graphics: AMD Radeon HD 8670D 768MB (800MHz), Audio: AMD Trinity HDMI Audio, Monitor: SAMSUNG, Network: Realtek RTL8111/8168/8411
OS: Arch rolling, Kernel: 3.18.1-1-ARCH (x86_64), Desktop: GNOME Shell 3.14.3, Display Driver: radeon 7.5.0, OpenGL: 3.0 Mesa 10.5.0-devel (git-0c7f895) Gallium 0.4, Compiler: GCC 4.9.2 20141224 + Clang 3.6.0 (SVN 224901) + LLVM 3.6.0svn, File-System: ext4, Screen Resolution: 1920x1080
Kernel Notes: radeon.dpm=1
Graphics Notes: EXA
Testing initiated at 29 December 2014 21:32 by user ben.
Processor: AMD A10-6800K APU @ 4.99GHz (4 Cores), Motherboard: Gigabyte F2A88X-UP4, Chipset: AMD Family 15h, Memory: 15360MB, Disk: 1000GB Western Digital WD10EZRX-00L + 512GB Crucial_CT512MX1, Graphics: AMD Radeon HD 8670D 768MB (800MHz), Audio: AMD Trinity HDMI Audio, Monitor: SAMSUNG, Network: Realtek RTL8111/8168/8411
OS: Arch rolling, Kernel: 3.18.1-1-ARCH (x86_64), Desktop: GNOME Shell 3.14.3, Display Driver: radeon 7.5.0, OpenGL: 3.3 Mesa 10.5.0-devel (git-0c7f895) Gallium 0.4, Compiler: GCC 4.9.2 20141224 + Clang 3.6.0 (SVN 224901) + LLVM 3.6.0svn, File-System: ext4, Screen Resolution: 1920x1080
Kernel Notes: radeon.dpm=1
Graphics Notes: EXA
Testing initiated at 29 December 2014 22:21 by user ben.
Processor: AMD A10-6800K APU @ 4.99GHz (4 Cores), Motherboard: Gigabyte F2A88X-UP4, Chipset: AMD Family 15h, Memory: 15360MB, Disk: 1000GB Western Digital WD10EZRX-00L + 512GB Crucial_CT512MX1, Graphics: AMD Radeon HD 8670D 768MB (800MHz), Audio: AMD Trinity HDMI Audio, Monitor: SAMSUNG, Network: Realtek RTL8111/8168/8411
OS: Arch rolling, Kernel: 3.18.1-1-ARCH (x86_64), Desktop: KDE 4.14.3, Display Driver: radeon 7.5.0, OpenGL: 3.0 Mesa 10.5.0-devel (git-0c7f895) Gallium 0.4, Compiler: GCC 4.9.2 20141224 + Clang 3.6.0 (SVN 224901) + LLVM 3.6.0svn, File-System: ext4, Screen Resolution: 1920x1080
Kernel Notes: radeon.dpm=1
Graphics Notes: EXA
Testing initiated at 29 December 2014 22:51 by user ben.