[nicolaslem]

These E/P cores were introduced by Intel with the 12th gen. When comparing modern laptops the 12th gen Intel models are at a real disadvantage compared to Ryzen 6000 (which has only normal P cores) in battery life tests.

My conclusion is that for now it is more of a gimmick than anything ground breaking.

[zamadatix]

I wouldn't say it's anything groundbreaking (phones have been doing this for 10 years now and Intel wasn't the first to introduce it to laptops/desktops the M1 was) but it's not a gimmick either. Intel 12th gen is just not a very efficient design and they lost their node advantage. Without efficiency cores the story would be just be "very bad" instead of "bad".

[marcyb5st]

Thanks for the comment. It is also my conclusion after reading around a bit.