: Arriving just as Windows 7 was entering the market, WinRAR 3.90 was specifically optimized for compatibility with the new OS, ensuring smooth integration with the Windows shell.
: The compression engine was redesigned to better utilize multi-core CPUs. This significantly increased compression speeds, especially on systems with multiple processors or cores. N(390)rar
: Version 3.90 was the first to offer a dedicated 64-bit Windows version, allowing it to leverage the full processing power and memory of 64-bit operating systems. : Arriving just as Windows 7 was entering