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Compression and Uncompression Are Much Faster Now

(May 03, 2012)

Berlin, Germany, May 03, 2012 --( win.rar GmbH and RARLAB are proud to present to the public the first Beta version of WinRAR 4.20. Users 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

The general trend in computer industry is increasing a number of CPU cores in PC. Quad core CPUs are becoming mainstream and affordable and users pay more attention to multicore efficiency. The primary target of WinRAR 4.20 has been improving this efficiency.

By utilizing more RAM and improvements in CPU the RAR compression speed in even single core mode CPU has been raised considerably. The main optimization has been made for multicore mode. For the typical average data mix the speed of RAR compression can be twice as fast as WinRAR 4.11. Poorly compressing data such as .jpg and mp3 even three times faster. Speed differences between the current version and previous versions grows with larger number of cores and type of data.

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.

Another tip: for all Windows-64-bit users, it is highly recommended to install the WinRAR 64-bit version. It is faster and offers best available integration.

Prices and availability

A 40-day trial version of WinRAR 4.10 can be downloaded on: After expiration of the 40-day period, the user is notified about the end of the test period.

WinRAR is available for $29. Http://

WinRAR is available in more than 40 different languages and is compatible with Windows 2000/2003/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:

About WinRAR
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 & 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

Contact Information:
win.rar GmbH
Violeta Berisha
+49 30 28886758
Contact via Email

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Related Keywords:Technology, Computer, Computer Programming, Computer Utilities, Software

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