How can I tell if the CPU is Itanium?

Discussion in 'Windows 64bit' started by =?Utf-8?B?TGVvbiBLYXRzbmVsc29u?=, Sep 26, 2006.

  1. I need to be able to tell (by lookign in the registry) if the machine is
    based on an Itanium processor. I really don't need to know if the OS is a 32
    or a 64-bit OS or if it si Windows 2000, 2003, XP etc. I just need to know
    the processor type. Can someone suggest which registry key I should be
    lookign for and what value I should expect for Itanium-based machines?
    =?Utf-8?B?TGVvbiBLYXRzbmVsc29u?=, Sep 26, 2006
    #1
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  2. HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0

    will give you the details of the processor. But you can also tell by the OS.
    With Itanium, it will _have_ to be one of the 64-bit Itanium versions.
    Unlike the x64 processor, there's no 32-bit native instructions, so you
    can't run 32-bit Windows on it. Nor can you run x64 instructions on it
    either.


    --
    Charlie.
    http://msmvps.com/xperts64


    Leon Katsnelson wrote:
    > I need to be able to tell (by lookign in the registry) if the machine is
    > based on an Itanium processor. I really don't need to know if the OS is a
    > 32 or a 64-bit OS or if it si Windows 2000, 2003, XP etc. I just need to
    > know the processor type. Can someone suggest which registry key I should
    > be lookign for and what value I should expect for Itanium-based machines?
    Charlie Russel - MVP, Sep 26, 2006
    #2
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  3. Hello,
    See this article:
    888731 How to determine the type of processor that your Windows Server 2003
    x64-based computer or your Windows XP Professional x64-based computer uses
    http://support.microsoft.com/default.aspx?scid=kb;EN-US;888731

    While the article references x64, it applies to Itanium as well.
    HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session
    Manager\Environment:pROCESSOR_IDENTIFIER value will tell you.

    Thanks,
    Darrell Gorter[MSFT]

    This posting is provided "AS IS" with no warranties, and confers no rights
    --------------------
    <From: "Charlie Russel - MVP" <>
    <References: <>
    <Subject: Re: How can I tell if the CPU is Itanium?
    <Date: Mon, 25 Sep 2006 22:59:10 -0700
    <Lines: 22
    <X-Priority: 3
    <X-MSMail-Priority: Normal
    <X-Newsreader: Microsoft Outlook Express 6.00.3790.2725
    <X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2725
    <X-RFC2646: Format=Flowed; Original
    <Message-ID: <>
    <Newsgroups: microsoft.public.windows.64bit.general
    <NNTP-Posting-Host: crussel.static.uniserve.ca 216.113.200.27
    <Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP05.phx.gbl
    <Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.64bit.general:40523
    <X-Tomcat-NG: microsoft.public.windows.64bit.general
    <
    <HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0
    <
    <will give you the details of the processor. But you can also tell by the
    OS.
    <With Itanium, it will _have_ to be one of the 64-bit Itanium versions.
    <Unlike the x64 processor, there's no 32-bit native instructions, so you
    <can't run 32-bit Windows on it. Nor can you run x64 instructions on it
    <either.
    <
    <
    <--
    <Charlie.
    <http://msmvps.com/xperts64
    <
    <
    <Leon Katsnelson wrote:
    <> I need to be able to tell (by lookign in the registry) if the machine is
    <> based on an Itanium processor. I really don't need to know if the OS is a
    <> 32 or a 64-bit OS or if it si Windows 2000, 2003, XP etc. I just need to
    <> know the processor type. Can someone suggest which registry key I should
    <> be lookign for and what value I should expect for Itanium-based
    machines?
    <
    <
    <
    Darrell Gorter[MSFT], Sep 27, 2006
    #3
  4. I knew there had to be an "official" place to look. Should have searched the
    KB first. Thanks, Darrell.

    Charlie.
    http://msmvps.com/blogs/xperts64

    ""Darrell Gorter[MSFT]"" <> wrote in message
    news:...
    > Hello,
    > See this article:
    > 888731 How to determine the type of processor that your Windows Server
    > 2003
    > x64-based computer or your Windows XP Professional x64-based computer uses
    > http://support.microsoft.com/default.aspx?scid=kb;EN-US;888731
    >
    > While the article references x64, it applies to Itanium as well.
    > HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session
    > Manager\Environment:pROCESSOR_IDENTIFIER value will tell you.
    >
    > Thanks,
    > Darrell Gorter[MSFT]
    >
    > This posting is provided "AS IS" with no warranties, and confers no rights
    > --------------------
    > <From: "Charlie Russel - MVP" <>
    > <References: <>
    > <Subject: Re: How can I tell if the CPU is Itanium?
    > <Date: Mon, 25 Sep 2006 22:59:10 -0700
    > <Lines: 22
    > <X-Priority: 3
    > <X-MSMail-Priority: Normal
    > <X-Newsreader: Microsoft Outlook Express 6.00.3790.2725
    > <X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2725
    > <X-RFC2646: Format=Flowed; Original
    > <Message-ID: <>
    > <Newsgroups: microsoft.public.windows.64bit.general
    > <NNTP-Posting-Host: crussel.static.uniserve.ca 216.113.200.27
    > <Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP01.phx.gbl!TK2MSFTNGP05.phx.gbl
    > <Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.64bit.general:40523
    > <X-Tomcat-NG: microsoft.public.windows.64bit.general
    > <
    > <HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0
    > <
    > <will give you the details of the processor. But you can also tell by the
    > OS.
    > <With Itanium, it will _have_ to be one of the 64-bit Itanium versions.
    > <Unlike the x64 processor, there's no 32-bit native instructions, so you
    > <can't run 32-bit Windows on it. Nor can you run x64 instructions on it
    > <either.
    > <
    > <
    > <--
    > <Charlie.
    > <http://msmvps.com/xperts64
    > <
    > <
    > <Leon Katsnelson wrote:
    > <> I need to be able to tell (by lookign in the registry) if the machine
    > is
    > <> based on an Itanium processor. I really don't need to know if the OS is
    > a
    > <> 32 or a 64-bit OS or if it si Windows 2000, 2003, XP etc. I just need
    > to
    > <> know the processor type. Can someone suggest which registry key I
    > should
    > <> be lookign for and what value I should expect for Itanium-based
    > machines?
    > <
    > <
    > <
    >
    Charlie Russel - MVP, Sep 27, 2006
    #4
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