A DirectX 9-capable processor with a WDDM driver and at least 128 MB of memory to support the Aero Glass interface.

Released in 2009, Service Pack 2 was a cumulative update that included all previous security patches and several notable features:

To run Vista Business SP2 effectively on a 32-bit (x86) architecture, your system ideally met these "Premium Ready" standards: 1 GHz 32-bit (x86) or 64-bit (x64) processor.

Added support for VIA Technologies’ 64-bit CPUs and improved compatibility with newer hardware.

The Business edition featured advanced networking and backup tools, including Remote Desktop and Complete PC Backup , which were essential for corporate environments. System Requirements for 32-bit Vista Business

A 40 GB hard drive with at least 15 GB of free space. The Legacy of Vista Business 32-bit Enable Remote Desktop Connection on Vista Home Premium

At least 1 GB of RAM (though 2 GB was recommended for better multitasking).