7zip
Intel Core i7-4700HQ testing with a GIGABYTE P34 and Intel HD 4600 2048MB on Ubuntu 14.04 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1504178-SO-7ZIP6574629.
7-Zip Compression
Compress Speed Test
Phoronix Test Suite v10.8.4