Author: Ralf Elvsén
Date: 02:48:36 08/13/99
Go up one level in this thread
On August 12, 1999 at 10:21:06, Ralf Elvsén wrote:
>On August 12, 1999 at 03:13:03, Rick Andrews wrote:
>
>>About how much weaker would a 180mhz computer play as compared to a 200mhz?
>>Thanks,Rick
>
>Hi
>
>I'm not absolutely sure about this, and if I'm wrong I surely will
>be corrected. Anyway...
>
>A doubling of processor speed should give a rating
>increment of approximately 70 points
>(give or take some, it's the right order of magnitude...)
>
>So, a factor f = 2 gives r = 70 points
>A factor f = 4 gives r = 140
>f = 8 gives r = 280 etc
^^^^
should be 140 + 70 = 210 as a kind soul pointed out...
The general formula below is correct (I hope)
>In general: f = 2^(r/70) or inverted
>
>r = 70*ln f/ln 2 where ln is the natural logarithm (anyone got a formula
>editor?)
>
>f = 200/180 = 1.11 and this is the factor you are considering.
>Insert in the above formula to get r = 11 rating points. Barely measureable...
>
>I have not taken into account any assumption about diminishing return.
>
>Ralf
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