The Win32_Processor class represents a device that is capable of interpreting a sequence of machine instructions on a Win32 computer system. On a multiprocessor machine, there will exist one instance of this class for each processor.

Quick Start


In this WMI class, all WMI properties are read-only. You can only read values but not change them.


Data type UInt16

Processor address width in bits.


Data type UInt16

The Architecture property specifies the processor architecture used by this platform. It returns one of the following integer values:

$Architecture_ReturnValue = 


Data type UInt16

The availability and status of the device. For example, the Availability property indicates that the device is running and has full power (value=3), or is in a warning (4), test (5), degraded (10) or power save state (values 13-15 and 17). Regarding the power saving states, these are defined as follows: Value 13 (“Power Save – Unknown”) indicates that the device is known to be in a power save mode, but its exact status in this mode is unknown; 14 (“Power Save – Low Power Mode”) indicates that the device is in a power save state but still functioning, and may exhibit degraded performance; 15 (“Power Save – Standby”) describes that the device is not functioning but could be brought to full power ‘quickly’; and value 17 (“Power Save – Warning”) indicates that the device is in a warning state, though also in a power save mode.

$Availability_ReturnValue = 
    3='Running/Full Power'
    5='In Test'
    6='Not Applicable'
    7='Power Off'
    8='Off Line'
    9='Off Duty'
   11='Not Installed'
   12='Install Error'
   13='Power Save - Unknown'
   14='Power Save - Low Power Mode'
   15='Power Save - Standby'
   16='Power Cycle'
   17='Power Save - Warning'
   19='Not Ready'
   20='Not Configured'


Data type String

The Caption property is a short textual description (one-line string) of the object.


Data type UInt32

Indicates the Win32 Configuration Manager error code. The following values may be returned:

0 This device is working properly.

1 This device is not configured correctly.

2 Windows cannot load the driver for this device.

3 The driver for this device might be corrupted, or your system may be running low on memory or other resources.

4 This device is not working properly. One of its drivers or your registry might be corrupted.

5 The driver for this device needs a resource that Windows cannot manage.

6 The boot configuration for this device conflicts with other devices.

7 Cannot filter.

8 The driver loader for the device is missing.

9 This device is not working properly because the controlling firmware is reporting the resources for the device incorrectly.

10 This device cannot start.

11 This device failed.

12 This device cannot find enough free resources that it can use.

13 Windows cannot verify this device’s resources.

14 This device cannot work properly until you restart your computer.

15 This device is not working properly because there is probably a re-enumeration problem.

16 Windows cannot identify all the resources this device uses.

17 This device is asking for an unknown resource type.

18 Reinstall the drivers for this device.

19 Your registry might be corrupted.

20 Failure using the VxD loader.

21 System failure: Try changing the driver for this device. If that does not work, see your hardware documentation. Windows is removing this device.

22 This device is disabled.

23 System failure: Try changing the driver for this device. If that doesn’t work, see your hardware documentation.

24 This device is not present, is not working properly, or does not have all its drivers installed.

25 Windows is still setting up this device.

26 Windows is still setting up this device.

27 This device does not have valid log configuration.

28 The drivers for this device are not installed.

29 This device is disabled because the firmware of the device did not give it the required resources.

30 This device is using an Interrupt Request (IRQ) resource that another device is using.

31 This device is not working properly because Windows cannot load the drivers required for this device.

$ConfigManagerErrorCode_ReturnValue = 
    0='This device is working properly.'
    1='This device is not configured correctly.'
    2='Windows cannot load the driver for this device.'
    3='The driver for this device might be corrupted    4= or your system may be running low on memory or other resources.'

    5='This device is not working properly. One of its drivers or your registry might be corrupted.'
    6='The driver for this device needs a resource that Windows cannot manage.'
    7='The boot configuration for this device conflicts with other devices.'
    8='Cannot filter.'
    9='The driver loader for the device is missing.'
   10='This device is not working properly because the controlling firmware is reporting the resources for the device incorrectly.'
   11='This device cannot start.'
   12='This device failed.'
   13='This device cannot find enough free resources that it can use.'
   14='Windows cannot verify this device's resources.'    15='This device cannot work properly until you restart your computer.'    16='This device is not working properly because there is probably a re-enumeration problem.'    17='Windows cannot identify all the resources this device uses.'    18='This device is asking for an unknown resource type.'    19='Reinstall the drivers for this device.'    20='Failure using the VxD loader.'    21='Your registry might be corrupted.'    22='System failure: Try changing the driver for this device. If that does not work
   23= see your hardware documentation. Windows is removing this device.'    24='This device is disabled.'    25='System failure: Try changing the driver for this device. If that doesn't work    26= see your hardware documentation.'
   27='This device is not present   28= is not working properly
   29= or does not have all its drivers installed.'

   30='Windows is still setting up this device.'
   31='Windows is still setting up this device.'


Data type Boolean

Indicates whether the device is using a user-defined configuration.


Data type UInt16

The CpuStatus property specifies the current status of the processor. Changes in status arise from processor usage, not the physical condition of the processor.


Data type String

CreationClassName indicates the name of the class or the subclass used in the creation of an instance. When used with the other key properties of this class, this property allows all instances of this class and its subclasses to be uniquely identified.


Data type UInt32

The current speed (in MHz) of this processor.


Data type UInt16

The CurrentVoltage specifies the voltage of the processor. bits 0-6 of the field contain the processor’s current voltage times 10. This value is only set when SMBIOS designates a voltage value. For specific values, see VoltageCaps.

Example: field value for a processor voltage of 1.8 volts would be 92h = 80h + (1.8 x 10) = 80h + 18 = 80h + 12h.


Data type UInt16

Processor data width in bits.


Data type String

The Description property provides a textual description of the object.


Data type String

The DeviceID property contains a string uniquely identifying the processor with other devices on the system.


Data type Boolean

ErrorCleared is a boolean property indicating that the error reported in LastErrorCode property is now cleared.


Data type String

ErrorDescription is a free-form string supplying more information about the error recorded in LastErrorCode property, and information on any corrective actions that may be taken.


Data type UInt32

The ExtClock property specifies the external clock frequency. If the frequency is unknown this property is set to null.


Data type UInt16

The processor family type. For example, values include “Pentium(R) processor with MMX(TM) technology” (14) and “68040” (96).

$Family_ReturnValue = 
   11='Pentium(R) brand'
   12='Pentium(R) Pro'
   13='Pentium(R) II'
   14='Pentium(R) processor with MMX(TM) technology'
   16='Pentium(R) II Xeon(TM)'
   17='Pentium(R) III'
   18='M1 Family'
   19='M2 Family'
   24='K5 Family'
   25='K6 Family'
   28='AMD Athlon(TM) Processor Family'
   29='AMD(R) Duron(TM) Processor'
   30='AMD29000 Family'
   32='Power PC Family'
   33='Power PC 601'
   34='Power PC 603'
   35='Power PC 603+'
   36='Power PC 604'
   37='Power PC 620'
   38='Power PC X704'
   39='Power PC 750'
   48='Alpha Family'
   49='Alpha 21064'
   50='Alpha 21066'
   51='Alpha 21164'
   52='Alpha 21164PC'
   53='Alpha 21164a'
   54='Alpha 21264'
   55='Alpha 21364'
   64='MIPS Family'
   65='MIPS R4000'
   66='MIPS R4200'
   67='MIPS R4400'
   68='MIPS R4600'
   69='MIPS R10000'
   80='SPARC Family'
   82='microSPARC II'
   83='microSPARC IIep'
   85='UltraSPARC II'
   86='UltraSPARC IIi'
   87='UltraSPARC III'
   88='UltraSPARC IIIi'
   97='68xxx Family'
  112='Hobbit Family'
  120='Crusoe(TM) TM5000 Family'
  121='Crusoe(TM) TM3000 Family'
  122='Efficeon(TM) TM8000 Family'
  130='Itanium(TM) Processor'
  131='AMD Athlon(TM) 64 Processor Family'
  132='AMD Opteron(TM) Family'
  144='PA-RISC Family'
  145='PA-RISC 8500'
  146='PA-RISC 8000'
  147='PA-RISC 7300LC'
  148='PA-RISC 7200'
  149='PA-RISC 7100LC'
  150='PA-RISC 7100'
  160='V30 Family'
  176='Pentium(R) III Xeon(TM)'
  177='Pentium(R) III Processor with Intel(R) SpeedStep(TM) Technology'
  178='Pentium(R) 4'
  179='Intel(R) Xeon(TM)'
  180='AS400 Family'
  181='Intel(R) Xeon(TM) processor MP'
  182='AMD AthlonXP(TM) Family'
  183='AMD AthlonMP(TM) Family'
  184='Intel(R) Itanium(R) 2'
  185='Intel Pentium M Processor'
  200='IBM390 Family'
  204='z/Architecture base'
  500='Video Processor'


Data type DateTime

The InstallDate property is datetime value indicating when the object was installed. A lack of a value does not indicate that the object is not installed.


Data type UInt32

The L2CacheSize property specifies the size of the processor’s Level 2 cache. A Level 2 cache is an external memory area that has a faster access times than the main RAM memory.


Data type UInt32

The L2CacheSpeed property specifies the clockspeed of the processor’s Level 2 cache. A Level 2 cache is an external memory area that has a faster access times than the main RAM memory.


Data type UInt32

The L3CacheSize property specifies the size of the processor’s Level 3 cache. A Level 3 cache is an external memory area that has a faster access times than the main RAM memory.


Data type UInt32

The L3CacheSpeed property specifies the clockspeed of the processor’s Level 3 cache. A Level 3 cache is an external memory area that has a faster access times than the main RAM memory.


Data type UInt32

LastErrorCode captures the last error code reported by the logical device.


Data type UInt16

The Level property further defines the processor type. The value depends on the architecture of the processor.


Data type UInt16

The LoadPercentage property specifies each processor’s load capacity averaged over the last second. The term ‘processor loading’ refers to the total computing burden each processor carries at one time.


Data type String

The Manufacturer property specifies the name of the processor’s manufacturer.

Example: GenuineSilicon


Data type UInt32

The maximum speed (in MHz) of this processor.


Data type String

The Name property defines the label by which the object is known. When subclassed, the Name property can be overridden to be a Key property.


Data type UInt32

The NumberOfCores property contains a Processor’s total number of cores. e.g dual core machine will have NumberOfCores = 2.


Data type UInt32

The NumberOfLogicalProcessors property specifies the total number of logical processors.


Data type String

A string describing the processor family type – used when the family property is set to 1 (“Other”). This string should be set to NULL when the family property is any value other than 1.


Data type String

Indicates the Win32 Plug and Play device ID of the logical device. Example: *PNP030b


Data type UInt16

Indicates the specific power-related capabilities of the logical device. The array values, 0=”Unknown”, 1=”Not Supported” and 2=”Disabled” are self-explanatory. The value, 3=”Enabled” indicates that the power management features are currently enabled but the exact feature set is unknown or the information is unavailable. “Power Saving Modes Entered Automatically” (4) describes that a device can change its power state based on usage or other criteria. “Power State Settable” (5) indicates that the SetPowerState method is supported. “Power Cycling Supported” (6) indicates that the SetPowerState method can be invoked with the PowerState input variable set to 5 (“Power Cycle”). “Timed Power On Supported” (7) indicates that the SetPowerState method can be invoked with the PowerState input variable set to 5 (“Power Cycle”) and the Time parameter set to a specific date and time, or interval, for power-on.


Data type Boolean

Boolean indicating that the Device can be power managed – ie, put into a power save state. This boolean does not indicate that power management features are currently enabled, or if enabled, what features are supported. Refer to the PowerManagementCapabilities array for this information. If this boolean is $false, the integer value 1, for the string, “Not Supported”, should be the only entry in the PowerManagementCapabilities array.


Data type String

The ProcessorId property contains processor-specific information that describes the processor’s features. For x86 class CPUs, the field’s format depends on the processor’s support of the CPUID instruction. If the instruction is supported, the ProcessorId property contains two DWORD-formatted values. The first (offsets 08h-0Bh) is the EAX value returned by a CPUID instruction with input EAX set to 1. The second (offsets 0Ch-0Fh) is the EDX value returned by that instruction. Only the first two bytes of the ProcessorID property are significant (all others are set to 0) and contain (in WORD-format) the contents of the DX register at CPU reset.


Data type UInt16

The ProcessorType property specifies the processor’s primary function.

$ProcessorType_ReturnValue = 
    3='Central Processor'
    4='Math Processor'
    5='DSP Processor'
    6='Video Processor'


Data type UInt16

The Revision property specifies the system’s architecture-dependent revision level. The meaning of this value depends on the architecture of the processor. It contains the same values as the “Version” member, but in a numerical format.


Data type String

A free form string describing the role of the processor – for example, “Central Processor”‘ or “Math Processor”


Data type Boolean

The SecondLevelAddressTranslationExtensions property determines whether the processor supports address translation extensions used for virtualization.


Data type String

The SocketDesignation property contains the type of chip socket used on the circuit.

Example: J202


Data type String

The Status property is a string indicating the current status of the object. Various operational and non-operational statuses can be defined. Operational statuses are “OK”, “Degraded” and “Pred Fail”. “Pred Fail” indicates that an element may be functioning properly but predicting a failure in the near future. An example is a SMART-enabled hard drive. Non-operational statuses can also be specified. These are “Error”, “Starting”, “Stopping” and “Service”. The latter, “Service”, could apply during mirror-resilvering of a disk, reload of a user permissions list, or other administrative work. Not all such work is on-line, yet the managed element is neither “OK” nor in one of the other states.

'OK','Error','Degraded','Unknown','Pred Fail','Starting','Stopping','Service','Stressed','NonRecover','No Contact','Lost Comm'


Data type UInt16

StatusInfo is a string indicating whether the logical device is in an enabled (value = 3), disabled (value = 4) or some other (1) or unknown (2) state. If this property does not apply to the logical device, the value, 5 (“Not Applicable”), should be used.

$StatusInfo_ReturnValue = 
    5='Not Applicable'


Data type String

Stepping is a free-form string indicating the revision level of the processor within the processor family.


Data type String

The scoping System’s CreationClassName.


Data type String

The scoping System’s Name.


Data type String

A globally unique identifier for the processor. This identifier may only be unique within a processor family.


Data type UInt16

CPU socket information including data on how this Processor can be upgraded (if upgrades are supported). This property is an integer enumeration.

$UpgradeMethod_ReturnValue = 
    3='Daughter Board'
    4='ZIF Socket'
    5='Replacement/Piggy Back'
    7='LIF Socket'
    8='Slot 1'
    9='Slot 2'
   10='370 Pin Socket'
   11='Slot A'
   12='Slot M'
   13='Socket 423'
   14='Socket A (Socket 462)'
   15='Socket 478'
   16='Socket 754'
   17='Socket 940'
   18='Socket 939'


Data type String

The Version property specifies an architecture-dependent processor revision number. Note: This member is not used in Windows 95.

Example: Model 2, Stepping 12.


Data type Boolean

The VirtualizationFirmwareEnabled property determines whether the Firmware has enabled virtualization extensions.


Data type Boolean

The VMMonitorModeExtensions property determines whether the processor supports Intel or AMD Virtual Machine Monitor extensions.


Data type UInt32

The VoltageCaps property specifies the voltage capabilities of the processor. Bits 0-3 of the field represent specific voltages that the processor socket can accept. All other bits should be set to zero. The socket is configurable if multiple bits are being set. For a range of voltages see CurrentVoltage. If the property is NULL, then the voltage capabilities are unknown.


$VoltageCaps = $3.3 + $5



See Also

Help and Questions

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Content last updated: 2013-12-27 12:09:17 (UTC).