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Subject: Re: Hardware for computer chess

Author: Tom Kerrigan

Date: 09:56:58 06/10/03

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On June 10, 2003 at 11:05:53, Robert Hyatt wrote:

>On June 10, 2003 at 02:37:56, Tom Kerrigan wrote:
>
>>On June 09, 2003 at 22:31:48, Robert Hyatt wrote:
>>
>>>On June 08, 2003 at 17:29:30, Tom Kerrigan wrote:
>>>
>>>>On June 08, 2003 at 08:25:17, Peter Berger wrote:
>>>>
>>>>>On June 08, 2003 at 07:43:51, Michael P. Nance Sr. wrote:
>>>>>
>>>>>>Tell Me how You think that a P/C with ONLY 650 mhz and ONLY 512 OF Ram is even
>>>>>>worth considering? Wouldn't You think that a Computer like that is
>>>>>>obsolete?>>>>Mike
>>>>>
>>>>>Those are not PCs so you can't simply compair the MHz numbers if you want to
>>>>>compair speed/performance. They are not obsolete, but I agree you wouldn't want
>>>>>to buy one (only) for computerchess at all :).
>>>>
>>>>You're right, an UltraSPARC IIi MHz is worth less than a Pentium 3, Pentium 4,
>>>>or Athlon MHz. :)
>>>>
>>>>-Tom
>>>
>>>
>>>I'm not sure that is totally true.  But the problem is they don't make those
>>>3+ gigahertz processors.  They are so far behind they will never catch up.  And
>>>I really don't believe they intend to try.
>>
>>No, it's true. According to SPEC 2k submissions, the US-IIi is the slowest
>>processor you can buy (per GHz) except for the US-IIe.
>>
>>http://www.aceshardware.com/SPECmine/index.jsp?b=0&s=2&v=4&if=0&r1f=2&r2f=0&m1f=0&m2f=0&o=0&o=1
>>
>>Even the Pentium 4 gets slightly more SPECints/GHz, the difference being that
>>the P4 runs at 3GHz and the IIi runs at 650MHz. Whoops... too bad for Sun.
>>
>>-Tom
>
>
>SPECINT is not the perfect test, however.  The sparc _can_ do 64 bit operations,
>which means it gets more per instruction than a PIV, for applications that need
>64 bits.  IE 64 bit adds, etc.

Well, sure, the US is a completely 64-bit chip. It may do more per instruction
but it's still in-order so it doesn't necessarily do more per clock. Also,
imagine a P4 running at 650MHz... no more memory bottleneck, so it'll perform
WAY better per GHz.

-Tom



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