A Modified Rating System

Many recognized a basic flaw with AMD's Athlon XP modeling system in that the model numbers increased at a quicker rate than the actual clock speeds of the chips did. For every 66MHz increase in clock speed, there was a 100 point increase in model number. Based on the old method, an Athlon XP 2400+ would be clocked at 1.93GHz and an Athlon XP 2600+ would weigh in at 2.06GHz; as you can guess, this isn't the case with these two CPUs.

The Athlon XP 2600+ (left) comes clocked at 2.13GHz, while the Athlon XP 2400+ (right) runs at an even 2.0GHz. You'll notice that the model numbers are shifted by 66MHz, presumably to compensate for the flaw we mentioned above.

AMD Athlon XP Model Numbers
CPU Name
Clock Speed
Athlon XP 2600+
2.13GHz
Athlon XP 2400+
2.00GHz
Athlon XP 2200+
1.80GHz
Athlon XP 2100+
1.73GHz
Athlon XP 2000+
1.67GHz
Athlon XP 1900+
1.60GHz
Athlon XP 1800+
1.53GHz
Athlon XP 1700+
1.47GHz
Athlon XP 1600+
1.40GHz
Athlon XP 1500+
1.33GHz
Index A Modified Core

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