Released in 2009, Service Pack 2 was a cumulative update that included all previous security patches and several notable features:
A DirectX 9-capable processor with a WDDM driver and at least 128 MB of memory to support the Aero Glass interface. Windows Vista Business SP2 (32 Bit)
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 Released in 2009, Service Pack 2 was a
At least 1 GB of RAM (though 2 GB was recommended for better multitasking). Integrated Windows Search 4
Integrated Windows Search 4.0 for faster indexing and reduced the power consumption for systems when running in a idle state.
Added support for VIA Technologies’ 64-bit CPUs and improved compatibility with newer hardware.
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.