И надо очень много оперативной памяти, для ультра минимум 512 метров пишут, особенно если большой обьём сжимаемых файлов.

ссылки пусть другие дают.

Автор не балует нас подробностями о том, что изменилось в программе

ссылки пусть другие дают

Release Name: 4.09 beta
- Bugs in v4.0* were fixed:
- Renaming inside archives didn't work or worked incorrectly
- GUI SFX didn't show extracting dialog at start
- Small fixes in 7-Zip GUI (7zG.exe)

Release Name: 4.08 beta
- Bug in installer for v4.07 was fixed: when rebooting
is required, it rebooted without asking user
- Small fixes in 7-Zip GUI (7zG.exe)

Release Name: 4.07 beta
Changes:
- Big amount of code was changed in this beta version.
So don't use it for important data compressing.
And test archive after compressing.
- Unified command line interface to GUI and console versions
- 7-Zip now can extract or test several archives in one command
- 7-Zip now doesn't interrupt the compressing when file is locked by
other application. 7-zip just skips that file and show warning.
Note: previous versions of 7-Zip had bug, so they can not unpack
non-solid and some solid 7z archives with such skipped files.
- Command line interface was changed:
- now it's possible to use absolute pathnames
- syntax simplification:
was: 7z a a Folder1\* Folder2\* -r
now: 7z a a Folder1 Folder2
- now it's possible to use complex wildcard commands, like *\*111*\*
- More smart detection of archive type for files with unusual
file name extensions
- Supporting for RAR archives with encrypted headers
- CPIO format supporting was improved
- For GZip and BZip2 formats you can:
- Compress from stdin (-si switch)
- Compress to stdout (-so switch)
- Extract to stdout (-so switch)
- 7-Zip File Manager:
- Split and Combine commands
- new list view options: Full row select, Show grid lines
- Internal reconstruction
- Some bugs were fixed
- New localizations: Friulian, Macedonian, Mongolian, Tamil, Thai