Hyperthreading in 2k

I know i have heard of windows 2k having some trouble with hyperthreading cpus...has sp4 done anything to solve this...What are the problems exactly and what impact do they have on performance...I am building a mid end system for a freind using a 2.4c and i hope he does not have to get a new OS as he has just bought win 2k pro...

3 386DX-25's...12 volts...glue some ln2 and a wicked amount of overclocking and you get a willamantee minus 36 pins, 33.75 million transistors and a couple hundred mhz... :cool:
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More about hyperthreading
  1. Windows 2000 supports multiple processors, but not Hyper-Threading.

    <A HREF="http://www.ocsystem.com/inp4cpuhyre.html" target="_new">Intel P4 Hyper-Threading</A>

    <A HREF="http://www6.tomshardware.com/cpu/20021227/" target="_new">HyperThreading Threads Its Way into Application</A>

    <A HREF="http://www.extremeoverclocking.com/reviews/processors/Intel_Pentium4_3.2C_2.html" target="_new">Intel Pentium 4 3.2 GHz (800Mhz FSB) Processor</A>

    <A HREF="http://www.intel.com/products/desktop/processors/pentium4/" target="_new">Intel® Products - Intel® Pentium® 4 Processor</A>

    Toey

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  2. thanks for the resoponse toey...i have since found some interesting benchies comparing 2000 w/ HT to xp w/ HT <A HREF="http://babelfish.altavista.com/babelfish/urltrurl?lp=de_en&url=http://www.computerbase.de/article.php?id=229" target="_new">here</A>

    I was reading through the bug fixes and enhancements of service pack 4 and i did not see anything about hyperthreading...do you know if it has done anything to fix it...

    What i don't understand is that the first xeons w/ HT all ran on 2k and 2k server... But now it seems like xp is the required os...

    3 386DX-25's...12 volts...glue some ln2 and a wicked amount of overclocking and you get a willamantee minus 36 pins, 33.75 million transistors and a couple hundred mhz... :cool:
  3. As far as I have been able to discover, Win2K Server and Win2K Advanced Server support Hyper-Threading, but only with a customized Hardware Abstraction Layer, the latest BIOS, and Service Pack 4. Interesting enough, Hyper-Threading has to be disabled in the BIOS while the Service Pack is installed, and then re-enabled afterwards.

    Adding Service Pack 4 to Win2K Professional doesn't change the fact that the operating system still doesn't appear to support Hyper-Threading.

    Quote from Intel website:

    <i>"Note: Information on Hyper-Threading Technology † for Intel® Xeon™ processors is available here.

    Microsoft* Windows* Operating System Desktop Based PCs

    The following desktop operating systems include optimizations for HT Technology and are currently eligible to carry the new Intel® Pentium® 4 Processor with HT Technology logo:

    Microsoft* Windows* XP Professional Edition
    Microsoft* Windows* XP Home Edition

    The following desktop operating systems are not recommended for use with Hyper-Threading Technology. If you are using one of the following desktop operating systems, it is advised that you should disable Hyper-Threading Technology in the system BIOS Setup program:

    Microsoft Windows 2000 (all versions)
    Microsoft Windows NT* 4.0
    Microsoft Windows Me
    Microsoft Windows 98
    Microsoft Windows 98 SE"</i>

    Links:

    <A HREF="http://www.intel.com/support/chipsets/inf/ht.htm" target="_new">Intel® Chipset Software Installation Utility
    Requirements to Support Hyper-Threading Technology †</A>

    <A HREF="http://www.theinquirer.net/?article=5608" target="_new">Both versions of XP support Hyperthreading</A>

    <A HREF="http://www.guygraphics.com/index2.html" target="_new">Hyper-Threading Technology - Intro</A>

    And you'll definitely want to look at this page:

    <A HREF="http://dipswitch.com/xeon.htm" target="_new">What exactly is HT?</A>

    WinXP requires Service Pack 1 to enable Hyper-Threading.

    Fortunately, this is really not an actual problem. There are only a few multi-threaded applications world-wide that support Hyper-Threading (at the moment), so whether or not Hyper-Threading is enabled is only a minor issue if you install one of them.

    <A HREF="http://www.geocities.com/a_noms/SMPgamelist.html" target="_new">SMP Game List</A>

    <A HREF="http://www.denniskarlsson.com/smp/" target="_new">List of multi-threaded applications</A>

    Toey

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  4. thanx for the resoponses toey..

    Looks like i will have to go with XP then...i supposse i could shut off all of its background crap and it should be just as good as my beloved windows 2k...

    3 386DX-25's...12 volts...glue some ln2 and a wicked amount of overclocking and you get a willamantee minus 36 pins, 33.75 million transistors and a couple hundred mhz... :cool:
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