Ah yeah, I should have specified I was looking at the laptop side of things more as the person I originally replied to mentioned that power usage is more important there (which is understandable). There appears to be only a handful of laptop chips that I can recognize in that first link and all of them amd but I don’t know the naming scheme of modern intel laptop parts anymore.

I would have to ask for a source on that. I can’t really find anything comparing many cpus.

However this video compares top end models on otherwise pretty much identical laptops and amd definitely wins in YouTube playback on battery https://youtu.be/X_I8kPlHJ3M

But if you’ve got anything to better compare I’m all ears

I don’t think Intel is more efficient if their desktops and this one link is anything to go by

https://www.cpu-monkey.com/en/cpu_benchmark-cpu_performance_per_watt

But I’m not up to date on laptop stuff at all so might be wrong