Re: Looks pretty medocre
~4% CPU performance gain ain't great
I'd call it "lost in the noise".
That said, how often is something like Microsoft Word CPU-bound? For most users, I'd bet even Excel spends very little time actually calculating. (People who use Excel for serious data-crunching - quants and computational scientists and the like - probably see it CPU-bound more often. But they're a minority.)
So 4% improvement for "productivity applications", while negligible, is also probably reasonable, simply because those applications spend so little time on the CPU. They spend most of their time waiting for the user, and most of the remainder in I/O.