Throttling won't matter if you choose the right laptop for your needs. Most people don't need laptops that can boost for long. They'd rather have extra few hours in low/idle.In many cases, what a high turbo means is that it will throttle like nobody's business in any half-serious use case and in all others, its practically idling and you lose any and all performance to do anything.
The importance of high boost in these CPUs is to make laptops responsive. Launching software, opening/saving files, browsing WWW, running short jobs et cetera will look exactly the same on a slim ultrabook and a mobile workstation. And these tasks define how comfortable a laptop is for a vast majority of both private and pro users.
The idea is that you should be able to e.g. edit a model in AutoCAD. Or edit a movie in DaVinci Resolve. Both are mainstream and well tested on ultrabooks. They work flawlessly.
Of course once you run a render / calculations in AutoCAD or encoding in Resolve, a mobile workstation will need a lot less time to complete. But that's the compromise and ultrabook users are aware of this.
I have no idea what your definition of "narrow" is here. These 15W CPUs are the best choice for almost all mobile users apart from relatively rare cases like:I mean yes, in their very narrow use case, these 'U' parts shine.
a) laptop gamers
b) people who run long heavy loads and don't have an alternative (they use just a single mobile PC - no access to cloud or a workstation).
Again: why?If you're even half serious about even a little productivity, you avoid this line.
This is the naive idea of "productivity" that is dominating this forum (but you, seriously?). It's like if people here thought "serious PC using" means zipping files or rendering 24/7, because that's what appears in CPU "productivity" benchmarks.
People underestimate the importance of these small incremental improvements, because they aren't as sexy as big numbers on slides. Just like when AMD announced >50% IPC improvement of Ryzen vs previous generations and we had so many "Intel can only do 5%" comments. ;-)Correct, and the resulting performance really is just more of the same, in the end. So your battery may last 20 minutes longer, wooptiedoo That's not going to change a thing.
Even if just 20 minutes, it's being squeezed from CPU optimizations, which makes it a fantastic achievement. Significant battery life gains usually compromises laptop usability - worse CPU/GPU/RAM, slower or smaller drives, worse screen, slower interfaces, weaker WiFi etc.