Os drivers AMDs Catalyst também funcionam no Vista, portanto, o WDDM1.2 também é compatível com versões anteriores:
Compatible Operating Systems
The latest version of the AMD Catalyst software suite is designed to support the following Microsoft Windows platforms:
Windows 8 32-bit version Windows 8 64-bit version Windows 7 32-bit version SP1 or higher Windows 7 64-bit version SP1 or higher
> Windows Vista 32-bit version SP2 or higher Windows Vista 64-bit version SP2 or higher