Compression and Uncompression are much faster now!
The current version has improved the speed significantly compared to older versions of WinRAR.
Berlin, 03.05.2012 – win.rar GmbH and RARLAB are proud to present the public the first Beta version of WinRAR 4.20. User will realize that the compression speed is up to three times higher than in previous versions and the improvements are valid for RAR and ZIP compression.
Speed Improvements for RAR Compression
Quad core CPUs are becoming mainstream and affordable and users pay more attention to multicore efficiency. Primary target of WinRAR 4.20 has been improving this efficiency.
Speed improvements for ZIP Compression
The ZIP Code has been rewritten and is now using similar techniques as in RAR compression, which is making WinRAR 4.2 ZIP compression faster than WinRAR 4.11, even in single core mode by about 70%. By utilizing the multicore support in 4.20 ZIP, can be up to 3 times faster than 4.11.
Additional improvements within the beta version of WinRAR 4.20
The RAR format continues to have many advantages like archiving, conversion, security and recovery functions. Recovery functions now also access multiple core processors in order to achieve time-savings when repairing files.
Please find more detailed information on improvements and bug-fixes at
Attention: All users of the Microsoft Windows' 64-bit version are strongly recommended to install the 64-bit-version of WinRAR as integration and performance have been improved highly compared to the 32-bit-version of WinRAR.
The new version of WinRAR 4.20 Beta 1 is available for download at
You will be informed again as soon as the final version is released.
WinRAR is available in more than 40 different languages and is compatible with Windows 2003/XP/Vista/2008/Windows 7. The command line version of WinRAR is also available for Linux. FreeBSD and MAC OS X.
Screenshots can be found at: http://www.win-rar.com/winrarscreenshots.html
WinRAR is a 32-bit and 64-bit Windows version of the RAR Archiver, the powerful archiver and archive manager, which supports also multi-core-processors. RAR files can usually compress content up to 30 percent more effectively than ZIP files. The most important functions of WinRAR include extremely powerful document and multimedia file compression, processing of other archive formats, programmable self-extracting archives (SFX), damaged archive repair, authenticity verification, Unicode support and archive encryption. WinRAR is available in over 40 different languages and runs on Windows 2000/2003/XP/Vista/2008/Windows 7. The command line version of RAR is available for Linux, FreeBSD and MAC OS X.
About win.rar GmbH
win.rar GmbH has been the official distributor of WinRAR and RARLAB products since February 2002 and handles all support, marketing and sales related to WinRAR & RARLAB.com. win.rar GmbH is registered in Germany and is represented worldwide by local partners in more than 70 countries on six continents. win.rar’s declared objective is to provide first-class quality support and to optimize their software to meet customer’s requirements in accordance with their valued feedback. For more information about WinRAR and win.rar GmbH go to http://www.win-rar.com
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