7zip
Intel Core 2 Quad Q6600 testing with a Gigabyte EX38-DS4 and AMD Radeon HD 7700 1024MB on Linux via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1212056-SU-7ZIP8386574.
7-Zip Compression
Compress Speed Test
Phoronix Test Suite v10.8.4