7zip
Intel Core i7-2600K testing with a ASRock Z68 Extreme4 Gen3 and Intel HD 3000 on Ubuntu 13.10 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1312127-SO-7ZIP4107486.
7-Zip Compression
Compress Speed Test
Phoronix Test Suite v10.8.4