[E39M5S62]

Don't forget the V series in there. I have an Intel(R) Core(TM) Ultra 7 258V in my Thinkpad. I think they're still being made. I bought an open box Thinkpad T14s Gen 6 with it - they come with a nicer GPU than the Ultra 7 255U.

[wtallis]

The V series is a one-off thing Intel did, but they don't have a direct successor planned.

Previously, they had a P series of mobile parts in between the U and H series (Alder Lake and Raptor Lake). Before that, they had a different naming scheme for the U series equivalents (Ice Lake and Tiger Lake). Before that, they had a Y series for even lower power than U series.

So they mix up their branding and segmentation strategy to some extent with almost every generation, but the broad strokes of their segmentation have been reasonably consistent over the past decade.

[E39M5S62]

Very interesting. I was a bit out of the loop on Intel mobile CPUs; I looked up the benchmark specs for it when purchasing and saw that it generally trounces the 255U.

I've been really quite happy with it - most of the time the CPU runs at about 30 deg C, so the fan is entirely off. General workloads (KDE, Vivaldi, Thunderbird, Konsole) puts it at about 5.5 watts of power draw.