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Power Management Setup, HPET Support, 32-Bit Mode versus 64-Bit Mode

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lcd1860nx
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2010/02/06 05:46:22 (permalink)
I just updated the bios for a 759 board and was redoing my settings when I came across "HPET Support" in the "Power Management Setup" in the bios. The two selections were "32-Bit Mode" or "64-Bit Mode".
 
I looked for this in the manual and the forum and did not find any guidance.
 
Is it important whether it is 32 or 64 Bit?
 
I am running Vista 64. Does that matter?
 
Many Thanks.
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    KMoore4318
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    Re:Power Management Setup, HPET Support, 32-Bit Mode versus 64-Bit Mode 2010/02/06 05:57:53 (permalink)
    HPET Support
    Common Options : Enabled, Disabled
    Quick Review
    The HPET, short for High Precision Event Timer, is a new system timer developed by Intel and Microsoft to replace the four system timers currently in use.
    Because of its higher precision and performance, it is naturally desirable to use the HPET instead of the older system timers. However, older operating systems do not support HPET. This is where the HPET Support BIOS option comes in.
    Setting it to Enabled allows the operating system and applications to use the High Precision Event Timer (HPET) for higher precision and better performance.

    For a 64 bit operating system set it to 64.

      
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    lcd1860nx
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    Re:Power Management Setup, HPET Support, 32-Bit Mode versus 64-Bit Mode 2010/02/06 06:26:44 (permalink)
    Thank you so much for the information. It gave me a lead to check term you mentioned in Wikipedia.
     
    It looks like Vista and 7 are supported while XP is not.
     
    Now that I have it set to 64-Bit it will be interesting to see if there is better media flow.
     
    Thanks again.
     
    http://en.wikipedia.org/wiki/High_Precision_Event_Timer

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    ybgood13
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    Re:Power Management Setup, HPET Support, 32-Bit Mode versus 64-Bit Mode 2010/02/06 16:20:49 (permalink)
    ok so what if your running win7 64 WITH virtual xp mode. i.e. will xp run alright with hpet set to 64? seems to in my case.

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    lcd1860nx
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    Re:Power Management Setup, HPET Support, 32-Bit Mode versus 64-Bit Mode 2010/02/08 14:07:18 (permalink)
    I have no idea but I had to go back to the 227 bios anyway. In that bios there is no selection for HPET in Power. I also have an elderly ASUS Striker Extreme (775 socket) and there is an HPET option in the bios.

    I think that it probably is not that perceptible regardless.

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