AMD Opteron? Processor PowerNow! Driver Version (exe) 1.2.2.0 - 1.2.2.1 allows the system to automatically adjust the CPU speed, voltage and power combination that match the instantaneous user performance need. Download this Setup Installation program (EXE) to automatically update all the files necessary for installation. This package is recommended for users whom desire a graphical user interface for installation. This .EXE driver is a user friendly localized software installation of the driver designed for end-users. This driver supports single core and dual core Opteron processors on Windows 32 bit OS and Windows 64 bit OS.