<< This has been debated ad nauseum. This is merely marketing AMD is using to keep things competitive in the CPU market. Intel knew AMD would win the MHz-War against it's P3 line, so when they developed the P4, they made it highly clockable with a lower clock/performance ratio. Why did Intel do this? Because they know, just like AMD knows, that an overwhelming majority of computer buyers base their decisions almostly soley on price and clock speed.
AMD reintroduced the PR ratings for these ignorant consumers, to save them from their own stupidity. They were not intended for, and thus will not affect, informed buyers like you and I (and most people into computer hardware, etc.) who know what the actual clock speed of the CPU is.
AMD is doing this for their own survival. I personally want AMD to survive in the market as a major player, because if they don't, competition will fade, and price/performance ratios will drop. So I give them props for their marketing scheme.
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What the smart guy said in the other forum 🙂