That's what I mean though. The gains you get from architectural and process related changes aren't uniform across the line, but usually focused on specific area. Naturally I think some sacrifice is there in absolute performance to get much better performance/watt at lower TDP and voltage segments. If high performance was slowing down back when Intel was focusing in 35W+ segments, it'll be even worse at 17W and below. In my opinion, that was Intel's signal that Intel was really serious about the low power market. They aren't giving it all up, but acknowledging that perhaps traditional PCs won't last forever. I don't buy it being due to the iGPU changes either. It shouldn't matter if you are not using it anyway and will go all to the CPU instead. Haswell isn't bringing lower TDP other than the process allowing performance to be better at really low power segment like the newly introduced 10W and 13W. The gain in battery life and such is all about the platform. I assume even ULT SKUs will have no change in clocks, but with the TDP at 15W, and the new platform power management scheme.