X1.7z

Ultra compression; can use up to a 256 MB window size but requires significantly more RAM and time. How to Use X1.7z Files

The format is an open-source, highly efficient compressed archive container. It was originally introduced as the native format of the 7-Zip software and is known for several key features: Ultra compression; can use up to a 256

If a .7z file is too large for email or specific storage, 7-Zip can split it into smaller "chunks" (e.g., X1.7z.001 , X1.7z.002 ) which can then be rejoined. How to recover corrupted 7z archive Ultra compression; can use up to a 256