Windows Vista Forums

Vista vs XP memory capacity

  1. #1


    tinfoil_CO Guest

    Vista vs XP memory capacity

    I plan to set up a new development system designed to host 3 VM guests
    running XP Pro. This will be a new machine and I have a sense that a Vista
    host would be more robust than an XP host in terms of larger memory capacity,
    resource management, etc. Am I wrong? Does Vista have any advantages as a
    VPC host over XP?

    Thanks!

      My System SpecsSystem Spec

  2. #2


    Jeff Gaines Guest

    Re: Vista vs XP memory capacity

    On 06/09/2008 in message
    <A2EB42C1-B40B-4148-98F7-368AE5DB1526@xxxxxx> tinfoil_CO wrote:

    >I plan to set up a new development system designed to host 3 VM guests
    >running XP Pro. This will be a new machine and I have a sense that a Vista
    >host would be more robust than an XP host in terms of larger memory
    >capacity,
    >resource management, etc. Am I wrong? Does Vista have any advantages as a
    >VPC host over XP?
    >
    >Thanks!
    Both XP Pro and Vista 32 have the (around) 3.5GB memory limit.
    If you want a real heap of memory then XP Pro x64 or Vista 64 may be a
    better bet, I can't remember the exact limits but it's lots!
    I run XP x64 here with 8GB RAM. If you go that route makes sure you can
    get 64 bit drivers, many are available but there are odd bits of hardware
    that can catch you out.

    --
    Jeff Gaines Damerham Hampshire UK
    By the time you can make ends meet they move the ends

      My System SpecsSystem Spec

  3. #3


    Mark Rae [MVP] Guest

    Re: Vista vs XP memory capacity

    "tinfoil_CO" <tinfoil_CO@xxxxxx> wrote in message
    news:A2EB42C1-B40B-4148-98F7-368AE5DB1526@xxxxxx

    >I plan to set up a new development system designed to host 3 VM guests
    > running XP Pro. This will be a new machine and I have a sense that a
    > Vista
    > host would be more robust than an XP host in terms of larger memory
    > capacity,
    > resource management, etc. Am I wrong? Does Vista have any advantages as
    > a
    > VPC host over XP?
    Not really... In fact, Vista generally needs twice as much RAM as XP.

    That said, if you were to install 64-bit Vista on the host, that would allow
    it to use more than the theoretical 4GB RAM available to 32-bit OS...


    --
    Mark Rae
    ASP.NET MVP
    http://www.markrae.net


      My System SpecsSystem Spec

  4. #4


    tinfoil_CO Guest

    Re: Vista vs XP memory capacity

    Thanks. I take it from your response (& Jeff's) that the issue is more of a
    32 vs 64-bit OS rather than a Vista vs X issue. Further, since XP has a
    smaller footprint as a host, I'd have more available memory for VM with an XP
    host. Does that sum it up?

    Sounds like my best best would go with XP 64-bit if I want to jack up the RAM.

    thx - tinfoil.
    "Mark Rae [MVP]" wrote:

    > "tinfoil_CO" <tinfoil_CO@xxxxxx> wrote in message
    > news:A2EB42C1-B40B-4148-98F7-368AE5DB1526@xxxxxx
    >

    > >I plan to set up a new development system designed to host 3 VM guests
    > > running XP Pro. This will be a new machine and I have a sense that a
    > > Vista
    > > host would be more robust than an XP host in terms of larger memory
    > > capacity,
    > > resource management, etc. Am I wrong? Does Vista have any advantages as
    > > a
    > > VPC host over XP?
    >
    > Not really... In fact, Vista generally needs twice as much RAM as XP.
    >
    > That said, if you were to install 64-bit Vista on the host, that would allow
    > it to use more than the theoretical 4GB RAM available to 32-bit OS...
    >
    >
    > --
    > Mark Rae
    > ASP.NET MVP
    > http://www.markrae.net
    >
    >

      My System SpecsSystem Spec

  5. #5


    Mark Rae [MVP] Guest

    Re: Vista vs XP memory capacity

    "tinfoil_CO" <tinfoilCO@xxxxxx> wrote in message
    news:E2D25794-A7B5-4D8E-A21E-94883C924AA1@xxxxxx

    [top-posting corrected]

    >>> I plan to set up a new development system designed to host 3 VM guests
    >>> running XP Pro. This will be a new machine and I have a sense that a
    >>> Vista host would be more robust than an XP host in terms of larger
    >>> memory
    >>> capacity, resource management, etc. Am I wrong? Does Vista have any
    >>> advantages as a VPC host over XP?
    >>
    >> Not really... In fact, Vista generally needs twice as much RAM as XP.
    >>
    >> That said, if you were to install 64-bit Vista on the host, that would
    >> allow
    >> it to use more than the theoretical 4GB RAM available to 32-bit OS...
    >
    > Thanks. I take it from your response (& Jeff's) that the issue is more of
    > a
    > 32 vs 64-bit OS rather than a Vista vs X issue.
    Inasmuch as 64-bit OS aren't bound by the 4GB RAM limit of 32-bit OS...

    > Further, since XP has a smaller footprint as a host, I'd have more
    > available
    > memory for VM with an XP host. Does that sum it up?
    Yes.


    --
    Mark Rae
    ASP.NET MVP
    http://www.markrae.net


      My System SpecsSystem Spec

  6. #6


    Zootal Guest

    Re: Vista vs XP memory capacity

    It's both, really. A 32bit Windows OS won't use more then 3-3.5 GB of ram,
    whether it's Win98, 2k, XP or vista. A 64 bit XP or Vista will.

    Vista is a pig. XP is leaner. It's (more or less) that simple.

    If you had time and have some techincal expertise, you could try a 64bit
    distro of linux, if your VM server comes in 64 bit linux binaries. You might
    find that to be even more efficient then XP64, and with linux, if you know
    how, you can tweak the cpu scheduler and memory manager and block io
    scheduler to optimize them for your particular needs and get even better
    performance.


    "tinfoil_CO" <tinfoilCO@xxxxxx> wrote in message
    news:E2D25794-A7B5-4D8E-A21E-94883C924AA1@xxxxxx

    > Thanks. I take it from your response (& Jeff's) that the issue is more of
    > a
    > 32 vs 64-bit OS rather than a Vista vs X issue. Further, since XP has a
    > smaller footprint as a host, I'd have more available memory for VM with an
    > XP
    > host. Does that sum it up?
    >
    > Sounds like my best best would go with XP 64-bit if I want to jack up the
    > RAM.
    >
    > thx - tinfoil.
    > "Mark Rae [MVP]" wrote:
    >

    >> "tinfoil_CO" <tinfoil_CO@xxxxxx> wrote in message
    >> news:A2EB42C1-B40B-4148-98F7-368AE5DB1526@xxxxxx
    >>

    >> >I plan to set up a new development system designed to host 3 VM guests
    >> > running XP Pro. This will be a new machine and I have a sense that a
    >> > Vista
    >> > host would be more robust than an XP host in terms of larger memory
    >> > capacity,
    >> > resource management, etc. Am I wrong? Does Vista have any advantages
    >> > as
    >> > a
    >> > VPC host over XP?
    >>
    >> Not really... In fact, Vista generally needs twice as much RAM as XP.
    >>
    >> That said, if you were to install 64-bit Vista on the host, that would
    >> allow
    >> it to use more than the theoretical 4GB RAM available to 32-bit OS...
    >>
    >>
    >> --
    >> Mark Rae
    >> ASP.NET MVP
    >> http://www.markrae.net
    >>
    >>


      My System SpecsSystem Spec

  7. #7


    Steve Jain Guest

    Re: Vista vs XP memory capacity

    On Sat, 6 Sep 2008 09:23:01 -0700, tinfoil_CO
    <tinfoilCO@xxxxxx> wrote:

    >Thanks. I take it from your response (& Jeff's) that the issue is more of a
    >32 vs 64-bit OS rather than a Vista vs X issue. Further, since XP has a
    >smaller footprint as a host, I'd have more available memory for VM with an XP
    >host. Does that sum it up?
    >
    >Sounds like my best best would go with XP 64-bit if I want to jack up the RAM.
    >
    >thx - tinfoil.
    Vista x64 is a better bet than XP x64. The support for Vista is
    better. XP x64 was always the black sheep.

    --
    Cheers,
    Steve Jain, Virtual Machine MVP
    http://vpc.essjae.com/
    I do not work for Microsoft.

      My System SpecsSystem Spec

  8. #8


    Bo Berglund Guest

    Re: Vista vs XP memory capacity

    On Sat, 6 Sep 2008 10:09:59 -0700, "Zootal" <msnews@xxxxxx>
    wrote:

    >It's both, really. A 32bit Windows OS won't use more then 3-3.5 GB of ram,
    >whether it's Win98, 2k, XP or vista. A 64 bit XP or Vista will.
    >
    >Vista is a pig. XP is leaner. It's (more or less) that simple.
    >
    >If you had time and have some techincal expertise, you could try a 64bit
    >distro of linux, if your VM server comes in 64 bit linux binaries. You might
    >find that to be even more efficient then XP64, and with linux, if you know
    >how, you can tweak the cpu scheduler and memory manager and block io
    >scheduler to optimize them for your particular needs and get even better
    >performance.
    >
    How could running a Linux-64 host help the OP?
    He wants to know which host operating system to base his deployment of
    a number of virtual machines on. He is asking here which implies using
    VPC2007, which only is available for Windows....

    --

    Bo Berglund (Sweden)

      My System SpecsSystem Spec

  9. #9


    Zootal Guest

    Re: Vista vs XP memory capacity

    > How could running a Linux-64 host help the OP?

    > He wants to know which host operating system to base his deployment of
    > a number of virtual machines on. He is asking here which implies using
    > VPC2007, which only is available for Windows....
    >
    1) He could try it under Wine on Linux. Might or might not work, and if so
    may or may not be faster then under native Windows.

    2) He could switch to a better and more efficient VM then VPC, one that does
    have 64 bit binaries for Linux.

    3) He could stick to Windows and maybe some day in the future remember this
    weirdo that suggested 64 bit Linux and try it then.

    4) The price of tea in China could go up.



      My System SpecsSystem Spec

  10. #10


    Stephane Barizien Guest

    Re: Vista vs XP memory capacity

    Shall I infer that the 64-bit version of VPC2007SP1 supports (any) 32-bit
    OS(es)?

    What are the requirements on the 64-bit host CPU?

    (like: you cannot run a 64-bit VMware guest on a 32-bit host unless the CPU
    supports some extensions...)

    I bet it does, but better safe than sorry...

    Jeff Gaines wrote:

    > On 06/09/2008 in message
    > <A2EB42C1-B40B-4148-98F7-368AE5DB1526@xxxxxx> tinfoil_CO wrote:
    >

    >> I plan to set up a new development system designed to host 3 VM
    >> guests running XP Pro. This will be a new machine and I have a
    >> sense that a Vista host would be more robust than an XP host in
    >> terms of larger memory capacity,
    >> resource management, etc. Am I wrong? Does Vista have any
    >> advantages as a VPC host over XP?
    >>
    >> Thanks!
    >
    > Both XP Pro and Vista 32 have the (around) 3.5GB memory limit.
    > If you want a real heap of memory then XP Pro x64 or Vista 64 may be a
    > better bet, I can't remember the exact limits but it's lots!
    > I run XP x64 here with 8GB RAM. If you go that route makes sure you
    > can get 64 bit drivers, many are available but there are odd bits of
    > hardware that can catch you out.


      My System SpecsSystem Spec

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