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Latest Version
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Operating System
Mac OS X
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User Rating
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Author / Product
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Filename
rarosx-4.2.0.tar.gz
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MD5 Checksum
bdfa72cf6582efbb59e5d192a26d1010
Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.
Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of RAR 4.2.0.
For those interested in downloading the most recent release of RAR for Mac or reading our review, simply click here.
All old versions distributed on our website are completely virus-free and available for download at no cost.
We would love to hear from you
If you have any questions or ideas that you want to share with us - head over to our Contact page and let us know. We value your feedback!
What's new in this version:
- Multithreaded RAR compression is enabled by default. (You can disable it with -mt1 switch.)
- Comparing to RAR 4.11, some speed gain is possible in single processor mode as well.
- Speed gain depends on data type and average file size.
- Several cores are utilized more efficiently when compressing large files.
- We had to increase memory requirements to achieve higher compression speed. General RAR compression algorithm allocates about 120 MB comparing to 40 MB in RAR 4.11.
- RAR text compression algorithm cannot utilize several CPU coresefficiently, so its performance in multiprocessor environment is much lower than for general algorithm. Also its decompression speed is much lower than in general algorithm regardless of CPU number. So we decided to disable the text algorithm by default.
- If you need maximum possible compression ratio for plain text data regardless of speed, you can enable the text compression with -mct switch.
- RAR general decompression algorithm speed is slightly improved, though not to same extent as RAR compression. RAR decompression is not able to use several processor cores, so its performance does not depend on a number of cores.
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