Only if the low level drivers for the Advanced Configuration and Power Interface have been compiled for x64 bit.
ACPI is the successor APMOperating System
ACPI is a function of the hardware and the BIOS. Most Pentium II motherboards do have ACPI, but you cannot add ACPI to a system that does not. If you cannot get ACPI to work, check to see if it is enabled in the BIOS.
With ACPI the operating system controls power management.
Replace the original HAL.
ACPI stands for Advanced Configuration and Power Interface. ACPI provides a standard for configuring devices and managing power for the operating system.
your system may support Advanced Configuration and Power Management (ACPI). check to see whether your system supports ACPI
ACPI S3 mode
Green Star is a corporation. ACPI is a standard.
Root System Description Table describesthe tables where ACPI stores information that it needs to pass on to the OS.
ACPI
Your system BIOS must be ACPI compliant.
APM (Advanced Power Management).