Faster file copying and reduced time to wake from sleep.
For a full installation ISO that includes the OS and SP1 pre-integrated, the Internet Archive hosts various community-uploaded MSDN and Retail copies, such as the Windows Vista 32-bit All Editions ISO. windows vista service pack 1 download 32 bit iso
Service Pack 1 was more than just a security patch; it introduced significant underlying changes: Faster file copying and reduced time to wake from sleep
Integrated all previously released security updates into a single package. Where to Download Windows Vista SP1 32-Bit ISO windows vista service pack 1 download 32 bit iso