I don't know when you last visited that website, but it has been that way for quite a long time now. I'm not quite sure what prompted the change long ago. It appears to be an alphabetical sort based on the Brand category (AMD, Intel, etc), followed by the sort by Model (Pentium, Athlon, Celeron, etc) according to performance of the model compared with others in the same Brand, then sorted by Speed within that Model.
-Raystonn
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