Quote:
Originally Posted by mr.slooz
Winrar uses various filters (compression alogs for diff. sources), 7zip not.
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That's actually not true - 7Zip also supports filters (x86/x64 executable code, PPC, IA64, ARM, SPARC, delta filter).
WinRAR dropped support for most of the specific filters in v5 (from the changelog: "RAR 5.0 format includes Intel IA-32 executable and delta compression algorithms, but RAR 4.x text, audio, true color and Itanium algorithms are not supported. These excluded algorithms are not efficient for modern data types and hardware configurations").