Re: Could be that they're yielding and binning much nicer than you suspect.
Do you have any measurements that indicate more headroom at stock voltage and cooling for the K8 core? Typically, headroom is gained through process improvements or newer steppings. I expect additional headroom from the F-stepping, but the results I linked to earlier were from E-step. I doubt much has changed from those scores. Of course, due to the variability between die, it's hard to know whether this test used a fast or slow part, so again, if you have more datapoints, I'd love to see them.
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