RAR decompression is not able to use several processor cores, so its performance does not depend on a number of cores. RAR general decompression algorithm speed is slightly improved, though not to same extent as RAR compression. Windows 2000 is not supported by WinRAR and WinRAR self-extracting modules anymore.
'Find files' command can search data in 7-Zip archives. Now the allowed value for -mt switch is 1 - 32, not 0 - 16 as before. Though, typically hard drive seek speed is a limiting factor for recovery volumes, so this gain is most noticeable when working with solid state drive. Recovery volume creating and processing can use several CPU cores resulting in higher speed.
