# Performance

We compared 7-Zip with WinRAR 5.20.

FILE SETS: Mozilla Firefox 34.0.5 for Windows and Google Earth 6.2.2.6613 for Windows.

Archiver | Mozilla Firefox | Google Earth
--- | --- | ---
65 files 85 280 391 bytes | 483 files 110 700 519 bytes
Compressed size | Ratio | Compressed size | Ratio
7-Zip 9.35 -mx | 39 357 375 | 100% | 15 964 369 | 100%
WinRAR 5.20 -m5 -s -ma5 -md128m | 41 789 543 | 106% | 17 035 432 | 107%

Compression ratio results are very dependent upon the data used for the tests. Usually, 7-Zip compresses to 7z format 30-70% better than to zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.