7-Zip
AMD Athlon II X4 635 testing with a BIOSTAR TA880GB+ and ATI Radeon HD 4250 256MB on Ubuntu 10.04 via the Phoronix Test Suite.
HTML result view exported from: https://openbenchmarking.org/result/1203035-AR-7ZIP6785380.
7-Zip Compression
Compress Speed Test
Phoronix Test Suite v10.8.4