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Old 09-05-02, 01:54 AM   #25
Essense
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That graph only strengthens my theory that the XP PR rating system is there to compare to the Pentium 4 and Not the Orginal Athlon Thunderbird. In the first graph we see the Athlon XP Core outperforming the Orginal Thunderbird core by 6%.

1.4 Ghz Orginal Thunderbird Vs 1.4 Ghz Athlon XP. 6% is the differnce.

That would mean the PR Rating would be 1.4 Ghz + 6%. Which would mean it would take a 1484 Mhz Orginal Thunderbird to equel the same speed as a 1.4 ghz Athlon XP. Which would Yield a performance Rating of Athlon XP 1.484 not Athlon XP 1500+

As the Mhz ramp out the differnce margin becomes much more.

If we take an Athlon Xp 2200+(1.8 Ghz) and add 6% we would get a PR rating of 1908. Which means it would take an Original Athlon 1908 Mhz to equal an Athlon XP at 1800. It's blatantly obvious the Rating is for the P4.

Regards,
Mike

P.s for those of you also wondering if you should upgrade processors. The differnce between a 1.4 Ghz Thunderbird and a 1.8 Ghz Athlon XP 2200+ is only 23% according to the information in the PDF shown above. If you overclock your chip it's even less.
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Old 09-05-02, 03:59 AM   #26
LuckyNV
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yer, that is interesting but that isn't the way to calculate the PR rating.

I'm trying to find that piece of information but i keep going round and round in circles on the AMD website.
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