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Subject: Re: Linear rating increase w/ linear speed increase?

Author: Stephen A. Boak

Date: 23:35:34 01/28/00

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>On January 27, 2000 at 22:07:05, Chris Carson wrote:

>Ok, here is my expanded chart:
>						Est.	SSDF	SSDF
>Mp	MHZ	Date	SI95	NPS	PLY	Rating	Rating	Program
>8086	5	Jun-78	0.006	75	6.1	1680
>8086	10	Jun-78	0.01	171	6.5	1787
>286	10	Feb-82	0.03	344	6.9	1877
>286	12	Feb-82	0.05	606	7.2	1950
>386	16	Sep-85	0.10	1250	7.7	2044
>386	33	Apr-89	0.21	2609	8.1	2139	2126	Mchess
>486	33	May-90	0.50	6188	8.5	2250	2240	Genius
>486	66	Aug-92	1.00	12500	8.9	2341	2367	Genius
>P5	66	Mar-93	2.00	25000	9.3	2431
>P5	90	Mar-94	2.74	34250	9.5	2471	2486	Tiger
>P5	133	Jun-95	4.01	50125	9.7	2521
>P5 MMX	200	Jan-97	6.44	80500	10.0	2582	2575	CM
>Ppro	200	Nov-95	8.09	101125	10.1	2611
>PII	300	Aug-97	12.90	161250	10.4	2672
>PII	400	Jun-98	16.90	211250	10.5	2706	2696	Tiger
>PIII	450	Jun-98	18.60	232500	10.6	2719
>PIII	667	Nov-99	32.80	410000	10.9	2792
>PIII	733	Nov-99	35.70	446250	10.9	2803
>PIII	800	Dec-99	38.40	480000	11.0	2812
>
>Regression
>Analysis
>R =	1.00
>SEM =	18.1
>Slope =	231.4
>Y intercept =	272.8
>
>Regression done using Ply and SSDF ratings to
>calculate Estimates at the given Ply.
>
>NPS = 125000*Specint95 (based on running my prog on LCTII test suite)
>PLY = Log(750*NPS)
>Note-This is Log-base 6 since average 36 moves per position.
>
>Note - My program is nowhere near this strong, just used as a
>reference to get the NPS estimate and verify ply depth.
>
>
>Best Regards,
>Chris Carson

Clarification, please:

1. SI95 is an 'industry standard' speed index for the various listed
microprocessors?

2. You derived relative NPS estimates from using relative SI95 figures, pegged
to a nominal NPS for one of the processors listed?

3. Where do you get the PLY figure from?  (i.e. how did you calculate it--I
assume you calculated it somehow)

5. How did you calculate the estimated rating for each line (processor/speed
combination)?

4. Is there some sort of auto-correlation or accidental correlation at work in
this table?

5. What did you run the regression analysis with?  (EXCEL built-in regression
tool, or custom-programmed regression method--perhaps via iterative macro loops,
etc?)

Thanks,
  --Steve



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