They’re supposed to be different chipsets, right? Ryzen Z1 series can operate in the range of 9-30W, as opposed to Phoenix’s 15-30W.
From what I see, Z1 = handheld 7540U and Z1 extreme = handheld 7840U.
There’s also talks about Phoenix2, but I’m not sure if this is Hawk Point (8040), or the low-powered Zen 4 + 4c combo APU? Right now, 7040 and 8040 look the exact same to me. Almost like as if they have been rebranded for next year, just with the better NPU.