Author: Christophe Theron
Date: 10:11:42 05/27/02
Go up one level in this thread
On May 27, 2002 at 03:43:10, Ulrich Tuerke wrote:
>On May 27, 2002 at 01:26:53, Uri Blass wrote:
>
>>On May 27, 2002 at 00:30:24, Frank Schneider wrote:
>>
>>>On May 26, 2002 at 18:49:23, Jorge Pichard wrote:
>>>
>>>>So far CT 14.9 is showing a SSDF rating less than 2125.
>>>
>>>IMHO computer vs. computer matches exaggerate the difference, I think
>>>Comet and Tiger were closer if both were matched against humans.
>>>
>>>However, the match shows that even a very good engine can't easily
>>>compensate a factor 10-20 hardware disadvantage.
>>>
>>>Frank
>>
>>The hardware advantage of Comet is a lot more than being 10-20 times faster.
>
>That's probably correct.
>I have heard that the difference from a Palm to a 486/50 is about a factot of 6.
>Accounting for another factor of 8 or so, you 'll get the P200.
>So, I'd guess Comet's advantage is roughly a factor of 50 in this match.
>Quite a a lot.
>
>Correct, Chris ?
Let's compute it another way.
The Pentium Pro executes roughly one instruction per cycle (actually I think
it's 1.1 instruction/cycle in average). That makes 200M instruction/second.
The DragonBall needs IIRC 14 clock cycles per instruction (average). Maybe
somebody can confirm or infirm this (the DragonBall is a 68000).
So 48M/14=3.429M instruction/second.
So the PP200 @200MHz seems to be approximately 200/3.429 = 58 times faster than
the DragonBall @48MHz.
But it does not look right because on my Palm (m505 @54MHz) I get a TigerMark of
1.3 and on a K6-2 450MHz I get 225. So the TigerMark on PP200 should be close to
100 (which is actually how the TigerMark has been calibrated: PP200=100), and so
by this method PP200 is 77 times faster than DragonBall @54MHz, so PP200 is 87
times faster than DragonBall @48MHz.
Let's say it's between 58 and 87 times faster. My best guess: Comet's hardware
is 72 times faster than Tiger's.
Christophe
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