Hyperthreading?

BubblemanBubbleman A Desert
edited April 2005 in Hardware
My computer manual says I can enable hyperthreading.

What does hyperthreading do?

Its not enabled right now...

Comments

  • dragonV8dragonV8 not here much New
    edited April 2005
    Technically, i don't know. Bit computer illiterate. :)

    However, if you understand tech-talk from Intel, check this out.

    As we have a lot of Intel computers folding in our house, we favoured the ones with HT. With HT enabled (in the bios) we can effectively run 2 wu's independ of each other. A single one with HT disabled will run faster.
  • edited April 2005
    First you'll need a HT enabled CPU, any 800mhz FSB Intel CPU and the 3.06GHZ with the 533 FSB will run HT. Second you need Windows 2000 or XP Pro although I've heard SP1 for home adds HT support.

    As to what it does it tells the OS that your PC has 2 CPU's and in action divides the work between 2 "logical" processors which I take to be the ALU and FPU parts of the CPU and lets them have the work that they do best on SMP enabled applications although I'm likely wrong about that part and distributes the workload.

    On SMP enabled apps you'll see a boost or when you run multiple apps at one time, on non SMP apps you won't see any improvement unless as I say you run several at a time.

    It's basically free HP, if your CPU has it and your OS supports it, do it.
  • RWBRWB Icrontian
    edited April 2005
    NOTE: You don't actually have two CPU's, it does in fact help and overall is faster and better to have HT enabled. You may or may not notice the difference, depends on the application.... like MS Word vs. UT2K4 :p You may notice UT play better, but if you're just using Word.... yeah, not much help :D
  • edited April 2005
    That's why I said "logical" processors not just processors.
  • BubblemanBubbleman A Desert
    edited April 2005
    I looked in my BIOS and cant find hyperthreading anywhere.
  • Shadow2018Shadow2018 Northwest Missouri
    edited April 2005
    What is the make and model of your mobo? Not every mobo on the market for intel cpu's has the HT option.
  • Straight_ManStraight_Man Geeky, in my own way Naples, FL Icrontian
    edited April 2005
    Not only some motherboards do not show the HT option, some automatically enable it if a processor has HT.

    Get CPUID and post for us what it says, OK??? That Central Processor Unit ID program works well with Intel, from experience.
  • BubblemanBubbleman A Desert
    edited April 2005
    General Information :
    Internal Specification : Intel(R) Pentium(R) 4 CPU 2.66GHz
    Codename : Northwood
    Revision : D1
    Technology : 0.13µ
    CPU ID : F.2.9
    Brand ID : 9
    Microcode : MU0F29021

    Features :
    VME - Virtual Mode Ext. : Yes
    DE - Debugging Extension : Yes
    PSE - Page Size Extension : Yes
    TSC - Time Stamp Counter : Yes
    MSR - Model Specific Registers : Yes
    PAE - Physical Address Extension : Yes
    MCE - Machine Check Exception : Yes
    APIC - Local APIC Built-in : Yes
    SEP - Fast System Call : Yes
    MTRR - Memory Type Range Reg. : Yes
    PGE - Page Global Enable : Yes
    MCA - Machine Check Architecture : Yes
    PAT - Page Attribute Table : Yes
    PSE36 - 36-bit Page Size Extension : Yes
    PSN - Unique Serial Number : No
    DS - Debug Trace & EMON Store : Yes
    ACPI - Software Clock Control : Yes
    SS - Self Snoop : Yes
    TM - Thermal Monitor : Yes
    HTT - Hyper-Threading : Yes
    SBF - Signal Break on FERR : Yes
    MON - Monitor/Mwait : No
    DSCPL - CPL qualified Debug Store : No
    TM2 - Thermal Monitor 2 : No
    CID - Context ID : Yes
    EST - Enhanced SpeedStep Tec... No
    NX Bit - No-execute Page Protec... No
    VMX - Vanderpool Technology : No

    Miscellaneous :
    FPU - Co-processor Built-in : Yes
    CX8 - CMPXCHG8B : Yes
    CX16 - CMPXCHG16B : No
    CMOV - Conditionnal Move Inst. : Yes
    CLF - Cache Line Flush : Yes
    FXSR - Fast Float Save & Restore : Yes
    DAZ - Denormals Are Zero : Yes
    MMX Technology : Yes
    SSE Technology : Yes
    SSE2 Technology : Yes
    SSE3 Technology : No
    EM64T Technology : No
    IA-64 Technology : No
    PBE - Pend. Brk. EN. : Yes

    Features Hyper-Threading :
    Technology : No

    Advanced Settings :
    In Order Queue Depth : 12
    Fast-Strings : Yes
    x87 FPU Opcode : No
    Thermal Monitor : Yes
    Split-Lock : Yes
    Performance Monitoring : Yes
    Prefetch Queue : Yes
    Branch Trace Storage : Yes

    Mainboard Upgradebility :
    Socket/Slot : Microprocessor
    Upgrade interface : ZIF Socket
    Supported Speed : 3200 MHz (or more)
    Supported Voltage : 1.2V


    This is my processor specs. As you can see. I do have hyper threading on my system I dont think its enabled tho.
  • gibbonslgibbonsl Grand Forks AFB
    edited April 2005
    Features Hyper-Threading :
    Technology : No

    does not look like the CPU has TH

    http://developer.intel.com/design/Pentium4/prodbref/

    about 1/3 way down

    the 2.66 dose not support HT

    the board might, but without the CPU support, it will not work
  • BubblemanBubbleman A Desert
    edited April 2005
    whoa I didnt see that.

    And yet it says Yes up there in the features.

    Oh well guess i dont have hyper threading...
  • BubblemanBubbleman A Desert
    edited April 2005
    whoa I didnt see that.

    And yet it says Yes up there in the features.

    Oh well guess i dont have hyper threading... :cool:
  • gibbonslgibbonsl Grand Forks AFB
    edited April 2005
    the system will if you install a CPU that does have HT ;)
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