Author: Vincent Diepeveen
Date: 06:57:19 08/30/03
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On August 29, 2003 at 14:47:35, David Hanley wrote: Currently shipping is 1.6Ghz G5. Of course we just care for chess. Crafty is the only chessprogram in specint. opteron 64 bits 2Ghz (shipping now) score (higher is better) : 1562 G5 1.6Ghz 64 bits : - NO ENTRY So what are you talking about? the big brother of the G5 is the power4. The g5 is a cheap rewrite of the power4. Power4 is a highend cpu with way more cache. First of all IBM cheats on specint by using unified L2 cache. At power4 the caches get unified. However, let's skip all the nonsense and just show how the power4+ performs and note that: Secondary Cache: 1536KB shared, unified (on chip) L3 Cache: 8MB unified (off-chip) per SCM, 1 SCM in SUT The G5 doesn't have all these features which are *GREAT* for specint. Despite all that it scores 773 So the opteron is more than 2 times faster. What did you say about G5 being good for chess? http://www.specbench.org/osg/cpu2000/results/res2003q2/cpu2000-20030407-02072.html Note that it also sucks ass for specint. Where bigger L2 and L3 cache helps even more for specint it just scores 836 at specint. Opteron, P4 (with cheating too at compiler level), Itanium2 they are all in the 1200-1300 range, the opteron even running 32 bits software. You can reduce that 836 to 400 when getting rid of all those cool L2 and L3 caches. So your statement is not only dead wrong, for chess it's even more horrible wrong. > >> >>Look how clumsy it handles complex integer instruction execution. >> > >Actually, it does quite fine on the spec int test. > >> >>The only good thing about it, is that it is a 64 bits cpu. >> >>But even any 32 bits processor of today will be faster for *any* chessprogram >>than this thing. > > >Now, that's an idiotic statement. I can get lots of slow 32 bit processors. > >( rest of emotional attack deleted ) > >dave
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