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Subject: Re: THE VERDICT: 4 x Mac G5 2.5GHz vs 4 x AMD Opteron 2.4GHz: Deep Shredder

Author: enrico carrisco

Date: 10:14:56 01/17/06

Go up one level in this thread


On January 17, 2006 at 06:25:18, Andreas Guettinger wrote:

>On January 17, 2006 at 05:27:26, enrico carrisco wrote:
>
>>On January 17, 2006 at 03:38:59, Andreas Guettinger wrote:
>>
>>>You compare Apple with pears. You compare the 64 bit PC version of Deep Shredder
>>>vs. the 32 bit Mac version. Such a comaprision is of course useless.
>>>
>>>regards
>>>Andy
>>
>>The whole point of my comparison was to see if Shredder's hardware for Paderborn
>>was only 10% slower than a Quad Opteron 2.4GHz as was stated here.
>>
>>There have been plenty of comparisons previously for G5 PPC vs AMD for chess --
>>I've normally seen the G5 at 70-75% of the AMD.
>>
>>Deep Shredder doesn't see a huge speed-up for 64-bit, something between 15-18%.
>>Shouldn't be too hard to estimate.
>>
>>-elc.
>
>Yes, but you make the assumption that Stefan would have used the 64-bit version
>on the Opteron. Maybe he just decided to go with the 32-bit version to Paderborn
>anyway because it's more tested and they compared the two 32-bit versions agains
>each other. Therefore the 10% seems to be fine.
>This is just speculation but the same is yours.

His own testers use betas in 64-bit on ICC and sometimes playchess.  I have no
doubt there are plenty of tests with 64-bit versions.

Clearly this is a case of what hardware was available for the event.

Regards,

-elc.

>
>regards
>Andy



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