Not really LOL.
This is the kind of response I don't really want to read. I know you're not stupid, so please don't act as such. You know what underperform means, but in case you don't want to remember it I'll tell you: it involves comparison. One thing underperforms compared to other when its perfomance is lower than the thing you're comparing to. There is no such thing as underperforming with only one thing, you need two and you need to compare them to decide which one is faster. Phenom is not slow by itself, Phenom is slow compared to Penryn (and Kentsfield). In consequence, Phenom underperforms compared to Penryn. I have not suffered any "under performing" as you call it with my Banias laptop, and yet it underperforms like hell compared to any Core2 or K10. So please, enough with that self-justificative responses.
Phenom scales well, I don't see any faults there. The problem is that when you increase frequency in both K10 and Core2 the base differencies grow bigger. And the problem with Deneb is the same, but it has way more frequency headroom so AMD can mitigate it with that: you'd need something like 4,5GHz+ to beat a 4GHz Penryn, the same way it needs 3GHz to be somewhat competitive with Q9450 and Q9550.
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