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Intel Core i5-4570 testing with a ASRock Z87 Extreme4 and Sapphire AMD Radeon HD 7900 3072MB on Ubuntu 15.10 via the Phoronix Test Suite.


Sapphire AMD Radeon HD 7900: 

	Processor: Intel Core i5-4570 @ 3.60GHz (4 Cores), Motherboard: ASRock Z87 Extreme4, Chipset: Intel 4th Gen Core DRAM, Memory: 16384MB, Disk: 320GB TOSHIBA MQ01ABD0 + 120GB Samsung SSD 840 + 250GB Western Digital WD2500AAKS-0, Graphics: Sapphire AMD Radeon HD 7900 3072MB (1150/1250MHz), Audio: Realtek ALC1150, Monitor: BenQ GW2255, Network: Intel Connection I217-V

	OS: Ubuntu 15.10, Kernel: 4.2.0-25-generic (x86_64), Desktop: MATE 1.10.2, Display Server: X Server 1.17.2, Display Driver: fglrx 15.30.3, OpenGL: 4.4.13416, Compiler: GCC 5.2.1 20151010, File-System: ext4, Screen Resolution: 1920x1080


GpuTest 0.7.0
Test: TessMark - Resolution: 1920 x 1080 - Mode: Windowed
Points > Higher Is Better
Sapphire AMD Radeon HD 7900 . 5015 |===========================================