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Subject: Re: windows for AMD64 - MMX not 64-bit threadsafe

Author: Jay Urbanski

Date: 11:41:37 08/29/03

Go up one level in this thread


On August 28, 2003 at 11:37:13, Eugene Nalimov wrote:

>On August 28, 2003 at 00:43:34, Jay Urbanski wrote:
>
>>On August 26, 2003 at 20:02:19, Eugene Nalimov wrote:
>>
>>>On August 26, 2003 at 19:01:30, Dan Andersson wrote:
>>>
>>>> Uck! A real bummer since the AMD x87 is a stellar performer.
>>>>
>>>>MvH Dan Andersson
>>>
>>>I just looked at the Spec2k, and I did not notice AMD x87 is stellar performer:
>>>
>>>http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030728-02428.html
>>>http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030630-02310.html
>>>http://www.spec.org/cpu2000/results/res2003q2/cpu2000-20030505-02137.html
>>>
>>>Thanks,
>>>Eugene
>>
>>Right.  Now calculate the price per SPECFP for each of those processors.
>>Opteron has *stellar* FP price / performance.
>
>That's probably true for the single CPU, but if you add system cost (i.e.
>motherboard/memory/peripherals) situation changes. Opteron can still win, but I
>am not sure.

Opteron still does win, by a wide margin.  The only way IPF gets close is if you
use the new 1.4Ghz 1.5MB cache chip Intel just released as a response to
Opteron.  The price of a p690 is so high, don't bother.

>But if we started talking about "price/performance" why not look at the ordinary
>Xeon or Pentium4? They have performance comparable to Opteron (within ~10%), and
>very competive price...
>

For SMP server systems:

http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030714-02406.html
http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030728-02426.html

Not even close.

If you compare Opteron versus a uni-processor desktop, it is back to
competitive:

http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030728-02428.html
http://www.spec.org/cpu2000/results/res2003q3/cpu2000-20030616-02266.html

But I would argue that's not a fair comparison until AMD releases their Athlon64
product.






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