Intel Core i5-2500K testing with a Gigabyte Z77N-WIFI and MSI AMD Radeon R9 200 4096MB on Ubuntu 14.04 via the Phoronix Test Suite.
Compare your own system(s) to this result file with the Phoronix Test Suite by running the command: phoronix-test-suite benchmark 1409302-SO-R9290XCAT64