AMD presents "The Bulldozer Blog"

[terrace215]

you claim that in integer work, with 50% utilization ,BD will be "particularly bad" without providing any source or at least a reason for this line of thinking.

I thought it was fairly obvious. Up to 50% activity, you have a full SB core with no HT load against 1/2 the module. Add in that Intel turbo >= AMD turbo (probably >> IMO), and there you go. For FP, at least in 256-wide work the module had to share to begin with, so the relative performance increase of half a module is greater when you stop loading the other half.

There was a thread back in the day on amdzone, where people started asking about single-threaded performance. JF's answer was first that it doesn't matter to server customers, and then, when pressed, well, it will be better than current k10.5 single threaded performance. Reading between the lines, it won't be great. Clearly not in SB's league. But what many people miss is that single-threaded performance directly relates to 50% loaded performance (more so integer), too, due to BD's module design, and SB's HT design.

So there, you have 2 indicators.

Like I said, a point of relative weakness. It's relative strength will be stuff that can truly continuously use all the cores.