macOS High Sierra (10.13) requires an Intel-based Mac with at least 2 GB of RAM and 14.3 GB of available storage. The operating system is compatible with most Mac models from 2009 onwards, including MacBook, MacBook Air, MacBook Pro, Mac mini, iMac, and Mac Pro. Specific supported models include MacBook (2009 and later), MacBook Air (2010 and later), MacBook Pro (2010 and later), Mac mini (2010 and later), iMac (2009 and later), Mac Pro (2010 and later), and Mac Studio (2022 and later when compatible). High Sierra requires macOS Sierra (10.12) or later for upgrading, though a clean install is possible on compatible hardware. The system benefits from additional RAM for better performance, particularly for resource-intensive tasks. A broadband internet connection is needed for downloading and installing the update. High Sierra introduced the APFS file system, which improves performance on SSDs and brings enhanced security features including the new Secure Enclave Processor integration. Graphics requirements remain modest, with most Intel integrated graphics sufficient for standard operations. For development work or using certain professional applications, users may want to verify compatibility with their specific software before upgrading.