Results 1 to 8 of 8
  1. #1
    3 Star Lounger
    Join Date
    Apr 2002
    Location
    UK
    Posts
    298
    Thanks
    6
    Thanked 0 Times in 0 Posts

    Hyper-Threading: Enable Or Disable?

    Hi,

    A friend mentioned to me that Intel's HT CPU's actually work like two half-speed P4 CPU's so my 2.6Ghz HT CPU actually runs (in HT mode) at 1.3. He said if you set it to non HT mode you will actually see some performance gains depending upon the task you are doing.

    Firstly, is this true and secondly my motherboard has an enable hyper threading option ... is that what I would change to get supposed benefits?

    Thanks

  2. #2
    Super Moderator jscher2000's Avatar
    Join Date
    Feb 2001
    Location
    Silicon Valley, USA
    Posts
    23,112
    Thanks
    5
    Thanked 93 Times in 89 Posts

    Re: Hyper-Threading: Enable Or Disable?

    I assume Intel has a performance paper on this; they typically have comparisons of each generation of Pentiums on standard industry benchmarks.Finding that on the site is another matter, however.....

  3. #3
    Banned Member
    Join Date
    Jul 2002
    Location
    Newport Richey, Florida, USA
    Posts
    2,149
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Hyper-Threading: Enable Or Disable?

    <hr>performance gains depending upon the task you are doing<hr>
    Depending upon what you are doing is what you really need to understand before you disable HT.


    Please Read <A target="_blank" HREF="http://www.intel.com/technology/hyperthread/">Hyper-Threading Technology is a groundbreaking innovation from Intel

  4. #4
    Plutonium Lounger
    Join Date
    Nov 2001
    Posts
    10,550
    Thanks
    0
    Thanked 7 Times in 7 Posts

    Re: Hyper-Threading: Enable Or Disable?

    Modern CPUs have multiple Arithmetic Logic Units (ALUs), Register Sets, Memory Paths, Instruction Fetch units etc.

    Hyperthreading provides the ability for two different threads to be using different parts of the same CPU at the same time. If there are two or more computable threads then Hyperthreading can give you significant performance improvements since it makes much more efficient use of the resources available on the CPU.

    If there is only one computable thread then it may run a few per cent slower due to the extra hardware and software needed to support hyperthreading. I suspect this is not sufficient to be measureable with most real applications.

    StuartR

  5. #5
    3 Star Lounger
    Join Date
    Apr 2002
    Location
    UK
    Posts
    298
    Thanks
    6
    Thanked 0 Times in 0 Posts

    Thanks :-)

    Thanks to all of you for those replies!

  6. #6
    Platinum Lounger
    Join Date
    Jan 2001
    Location
    Quedgeley, Gloucester, England
    Posts
    5,333
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: Thanks :-)

    Of course it could be argued that the manufacturer of a CPU chip probably knows more about what components and features it should contain to produce optimum efficiency than does even the technical layman...

    But equally of course I could never advocate such a view with the overclockers amongst us... <img src=/S/evilgrin.gif border=0 alt=evilgrin width=15 height=15>
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

  7. #7
    Banned Member
    Join Date
    Jul 2002
    Location
    Newport Richey, Florida, USA
    Posts
    2,149
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Thanks :-)

    Should I join Overclockers Anonymous, cause I am very addicted?

  8. #8
    Platinum Lounger
    Join Date
    Jan 2001
    Location
    Quedgeley, Gloucester, England
    Posts
    5,333
    Thanks
    0
    Thanked 1 Time in 1 Post

    Re: Thanks :-)

    You could if you wish, but having so many spare CPUs, motherboards, etc -- hey, if one goes up in flames, there are so many more! <img src=/S/evilgrin.gif border=0 alt=evilgrin width=15 height=15>
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •