|APIC||ACPI Uni/Multiprocessor PC (pre-Vista)
ACPI x86-based PC (Vista and later)
|MPS Uni/Multiprocessor PC|
|Non-APIC||ACPI PC||Standard PC|
On NT 4.0 and earlier, the ACPI column does not apply as NT 4 and earlier does not support ACPI.
On Vista and later, the non-ACPI column does not apply as Vista and later only support systems that have ACPI.