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  1. #1
    Senior Coder missing-score's Avatar
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    Dual core processor compatability

    Hey everyone.

    I was just wondering how compatible dual core processors are with windows XP? I uderstand that the OS probably couldnt use both processor cores, but would it work at all?

    Sorry for the potentially stupid question, I couldn't find anything of use on google.

    Regards
    Matt

  • #2
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    Yes, it will work. I believe Windows XP Pro can support up to two processors, but maybe it is 4, I'm not 100% sure.
    OracleGuy

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    Senior Coder missing-score's Avatar
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    Cool

    I'm talking about an X2 processor though? Not 2 separate processors... Is this basically the same thing (2 processors = 1 Dual core processor).

    Thanks
    Matt

  • #4
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    Basically yes, they are the same. The OS should see the dual core CPU as two physical processors.

    I haven't heard of people having problems with dual core CPUs and if they didn't work with XP, I'm sure you would have heard about it on the net by now.

    I'd recommend running the 64-bit version of XP (Or 64-bit linux if thats your thing) though since I believe all the dual core (or at least the majority of them) are 64-bit CPUs too.
    OracleGuy

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    Senior Coder missing-score's Avatar
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    Yeah I haven't seen any 32bit dual cores. Thanks (once again) for the information oracleguy

  • #6
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    No problem.
    OracleGuy

  • #7
    Senior Coder missing-score's Avatar
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    Sorry to continue this discussion.

    So, I am thinking about building a high spec computer with either a dual core or dual processor setup, and installing XP 64 and Linux 64 distro on 2 separate hard drives.

    However, my main concern is about 32 bit software. Most of the software I run at the moment is designed for 32 bit platform, and I need to know that most software would work on 64 bit before upgrading.

    In my mind, it doesn't seem like there woudl be a problem, but I could be very wrong. Does anyone know what would happen in this case?

  • #8
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    I'm not sure how it works on 64-bit linux but with Windows XP the way it works as far as I understand is that you can still run 32-bit programs no problem. I believe there is some sort of emulation layer that allows it to work. I think there is a name for what it is called under Windows but I can't remember it.
    OracleGuy

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    Senior Coder missing-score's Avatar
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    Cool thanks again. I definatley think I might be looking into this after christmas when the funds are a little higher

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    I have experienced many issues with the 64 bit version of Windows, but XP seems to be working fine on both my dual Xeons and the Dual-core system. I cant say that everything is great though. Although the Xeons have no cooling issues whatsoever, the dual-core system heats up to the point of maxing out the speed of my fans. I am running a Lanboy case, which is loud regardless of what the manufacturer states...

    The intel dual-core works much better on my video and audio editing programs than the AMD version and the Xeons, but I guess intel has always owned that genre for performance.

    I have noticed also, that I have certain issues with the system locking up when I use certain types of compression. This is extremely annoying, anybody have any idea what that is about? The Xeons dont get bothered by it nor have I ever even seen it. Thanks guys, you make for a good read...

    Chico V.

  • #11
    Senior Coder missing-score's Avatar
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    I did wonder about how stable XP 64 is, but when I build this system I will probably download a trial of the software before buying it. Myself, I am an AMD guy so I would be getting an AMD dual core over an intel.

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    The issues I've had with x64 are almost entirely one of two things: drivers problems, or programs with direct hardware access. Most things run splendidly.

    Dual core should look like two processors, just like hyperthreaded single cores do.


    As for performance, what I've seen on reviews is that singlethreaded or dualthreaded games, AMD blows Intel away, while Intel has much better multitasking performance. Without hyperthreading, Intel processors are pretty much for all purposes beaten by AMD. AMD has superior floating point performance as well as vector performance, Intel has superior integer and storage performance.




    As for 32-/64-bit-ness of dual core processors, I think all PC processors with dual core are 64-bit. Freescale have dual core 32-bit PPC processors I believe.
    Last edited by liorean; 11-29-2005 at 06:25 PM.
    liorean <[lio@wg]>
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  • #13
    Senior Coder missing-score's Avatar
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    Thanks for the informatio liorean... What kind of drivers have you been having problems with... Particularly sound card/graphic card drivers? did you have problems with them, and how hard (or were they even) fixable?

  • #14
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    The problem was simply that drivers need to be 64-bit, you can't use 32-bit drivers. So my DVD, network cards and bluetooth mouse didn't work, and graphics card was sluggish. ASUS kindly provided 64-bit sound drivers so no problem there.


    I believe the driver availability for Windows x64 has gotten much better now, however.
    liorean <[lio@wg]>
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  • #15
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    I see. The main thing is, I will be using an SLI board (although not using crossfire) and an expensive soundcard and graphics card, so I'm very wary that they might not install well.. However, I do, at least, have 32 bit windows to fall back onto.


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