Announcement

Collapse
No announcement yet.

Please help on Intel Core 2 Duo 2.53Ghz P9500

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • paachaa
    started a topic Please help on Intel Core 2 Duo 2.53Ghz P9500

    Please help on Intel Core 2 Duo 2.53Ghz P9500

    Hi guys,

    Would someone know if this processor would support a 64-bit OS?

    Thanks a lot

  • _pma
    replied
    Originally posted by lordmozilla View Post
    How come its not enabled by default in vista 32bit? Would stop alot of people complaining...
    It would make a lot of people complain : PAE can be efficient for some kind of work but it can be very slow and inefficient. So unless you're a computer expert you don't want this unable. And if you're such an expert working with windows one expects you to be able to configure your OS according to your needs.

    Leave a comment:


  • _pma
    replied
    Originally posted by curaga View Post
    No, you would only see visible speedup in intensive tasks. Ability to use more RAM and wider registers are the main advantages.
    The amd x86_64 arch is clearly going faster through the use of more and extended registers when using the 64 bit mode. Conversely the intel core 2 architecture is known (That's what I was told at least) to be a touch slower in 64 bit than in 32 bit mode.

    If I don't mistake the problem of core2 is due to the fact that the so called macrofusion (you know this things that allows core2 processors to decode 2 x86 instructions at the same time) is not available in 64 bits mode.

    Notice that there is no such problem with the Nehalem or barcelona architectures. Also, I don't feel my core2 E6750 to be that slow under FC10 (64bit). I have no benchmark results to show but I don't expect the performances to drop by --- lets take a large margin --- 10 %. So you can confidently erase your old windows 32 bits ; try the 64 bits version ; face a mountain of bugs and other problems ; and then switch to any reliable POSIX compliant OS :-).

    Leave a comment:


  • lordmozilla
    replied
    oh ok i didn't know XP and vista supported it... How come its not enabled by default in vista 32bit? Would stop alot of people complaining...

    allright flash 10 on 64bit might not be quite as good, but I mean it still works pretty well, I'm now wondering wether i've ever fullscreened a flash video...
    Last edited by lordmozilla; 03-07-2009, 04:21 PM.

    Leave a comment:


  • Kano
    replied
    Flash 10 does not use opengl accelleration for fullscreen with 64 bit. So it is not fully on par with 32 bit.

    Leave a comment:


  • deanjo
    replied
    Originally posted by lordmozilla View Post
    It's not supported i dont think in microsofts desktop os, but is in it's server versions. On linux you can just install the PAE kernel. it's an easy apt search and install...
    • Windows Server 2008 (32-bit only)
    • Windows Vista (32-bit only)
    • Windows Server 2003 (32-bit only)
    • Windows XP (32-bit only)
    • Windows 2000 Datacenter Server
    • Windows 2000 Advanced Server

    All support PAE

    http://msdn.microsoft.com/en-gb/libr...96(VS.85).aspx

    Leave a comment:


  • lordmozilla
    replied
    The 32bit > 4GB/3GB is not exactly true. Any recent CPU will support PAE (well since the pentium pro or so). This enables 36bit memory support and so can support 64GB of ram.

    It's not supported i dont think in microsofts desktop os, but is in it's server versions. On linux you can just install the PAE kernel. it's an easy apt search and install...

    However on linux, there is very good 64bit support so PAE really is not needed any more. I've been running 64bit Ubuntu 8.10 and 8.04 on a variety of desktop machines and it's always been fine. There were problems with flash etc... but thats in the past.

    Don't think for one second that a 64bit OS will speed anything up though. That's just lying to yourself. It'll do about as much as that 10mhz overclock on your cpu ;-)

    Leave a comment:


  • MU_Engineer
    replied
    Originally posted by paachaa View Post
    I see, thanks a lot for your help. I just have one last one again about the switch to 64-bit. For processors that support 64-bit, when switching to a 64-bit OS, is there a need to change anything in the Bios or it's done automatically since the processor already has the 64-bit feature?

    I appreciate your help!
    All x86 processors actually start up in 16-bit mode for the BIOS to load. Once the BIOS power-on self-test is complete and it hands off control to the bootloader to load the OS kernel, the kernel tells the CPU what mode it has to run in: 16-bit mode, 32-bit mode, or 64-bit mode. The CPU then switches to the correct mode and loads the OS kernel and off you go. If the kernel wants to run in a mode unsupported by the CPU (such as telling a 32-bit-only CPU to run in 64-bit mode), then you immediately get an error and the computer quits loading the kernel.

    Leave a comment:


  • RealNC
    replied
    It's done automatically.

    Leave a comment:


  • paachaa
    replied
    I see, thanks a lot for your help. I just have one last one again about the switch to 64-bit. For processors that support 64-bit, when switching to a 64-bit OS, is there a need to change anything in the Bios or it's done automatically since the processor already has the 64-bit feature?

    I appreciate your help!

    Leave a comment:

Working...
X