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Subject: Re: Magic 200MHz

Author: Tom Kerrigan

Date: 10:52:01 05/20/03

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On May 20, 2003 at 00:26:49, Robert Hyatt wrote:

>Actually it _does_ surprise me.  The basic idea is that HT provides improved
>resource utilization within the CPU.  IE would you prefer to have a dual 600mhz
>or a single 1000mhz machine?  I'd generally prefer the dual 600, although for

You're oversimplifying HT. When HT is running two threads, each thread only gets
half of the core's resources. So instead of your 1GHz vs. dual 600MHz situation,
what you have is more like a 1GHz Pentium 4 vs. a dual 1GHz Pentium. The dual
will usually be faster, but in many cases it will be slower, sometimes by a wide
margin.

>Could it be slower in some?  Of course.  But then the algorithm(s) in question
>need work, obviously...

No. See above.

-Tom



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