Guys, what's this obsession with IPC? There is no use in having a 50% higher IPC if your competition can clock their cores at more than double the frequency of your cores while still use the same amount of power as your cores. It's about the architecture as a whole, that's amount of threads per chip, IPC per thread and clock frequency. This all has to stay within a certain power envelope and the chip should not be too big.
We have absolutely no idea how Bulldozer will turn out. It might even completely surprise us by having a lower IPC than Phenom II, but running at a lot higher frequency while still consuming less power than whatever Intel has on the market when Bulldozer launches. The end result would be higher per thread performance, while actually having lower IPC and no sacrifices in power consumption. I'm not saying that Bulldozer will be anything like that, but you guys just seem to be too focused on IPC and IPC is only part of the solution.
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