RAR5 archives use 256-bit AES encryption , an upgrade from the 128-bit encryption used in previous versions.
Higher dictionary sizes (up to 1 GB) for better compression of large files. Enhanced Security: Robust 256-bit encryption for password-protected archives. Recovery Record: Improved ability to repair damaged archives. Multi-Core Support: Better performance during compression on modern processors. Architecture: 32-bit vs. 64-bit WinRAR 5.01 -32bit - 64bit -full version