First of all, that Volterra PC is likely using an 8CX Gen 3 - which has four X1 cores @ 3GHz, and four A78 cores at 2.4GHz, and is fabricated on Samsung 5NM LPE, which offers dynamic power consumption higher than TSMC N7 - we can compare A78 and A710 cores on TSMC N6/N7, or Mali GPU's to Samsung 4/5NM for example, and the power suffers with Samsung's processes, even within the same manufacturer. That said, it will still offer decent or comparable performance per watt relative to what Intel and AMD have at least per core. Those X1's can realize Geekbench 1000-1100ST per leaks, and in Spec tests in phones, X1's clocked at 2.84GHz consume about 3.2-4.2W of power. The A78's would be about 65-75% of that, albeit at 2.2W in this case from the 888 where they're clocked similarly and on Samsung 5NM.
So you may be looking at a 1100/5500-6000 GB5 ST/MT device in a 15-25W profile. Not M1-tier, but it's old, reference Arm IP with just okay cache and a process that's worse than TSMC N7. I don't think it's especially good of course, but it's at least fundamentally *usable* unlike their past stuff using four A76's as their performance cores. This is probably why Microsoft are about to sell them for developers, because in 2023, Qualcomm will have TSMC-fabricated SoC's for laptops with a custom CPU architecture, but that's another story, and should prove to be Windows' "M1 moment" so to speak. And no, Apple will not be on the M3 by then, for the most part anyways (they may release the M3 on an iMac in 2023, but the small upgrade that will be the M2, M2 Pro/Max will be in 2022, 2023, and they could even skip the latter - point is - Qualcomm will be much, much closer than anyone here realizes, if not outright ahead on some metrics).
I would also note that often Intel and AMD laptops can showcase great "battery life" as defined by merely having the screen on while most of the CPU idles/gates off/low clocks and a video decode block functions, or just web browsing at 150nits with a DVFS/Windows Power setting that effectively shunts performance to dumpster time. AMD with Zen 3 actually automatically shunt performance the moment a laptop is unplugged (Changed with Rembrandt but still).
What matters isn't so much "battery life and performance" under completely distinct contexts deliberately designed to paint Intel/AMD's indices in a great light, but also battery life whilst sustaining that performance, or put another way - performance while pegged to voltages & frequencies that are favorable to power draw. I am not saying idling isn't a big deal - it absolutely is and so is acceleration for e.g. common video formats as AMD show with Rembrandt, but still. I thought people learned this with the M1, it's not just "low power" but
performance at those low wattages.
Second of all: Qualcomm accelerator blocks via Hexagon are no joke. AMD and Intel may be behind on such things but Qualcomm's Hexagon actually sees use by third-party applications on Android, and they have first-party use as well as of 8Cx Gen 3. See the links below about extracting speech from audio captured - and it only requires one microphone - and wiping out background noise. Similar to RTX Voice, albeit at low power. AMD and Intel don't do much in this vein, but the idea that Qualcomm and MS are ********ting about the utility of AI acceleration with future Qualcomm chips is just lame. Don't dismiss something because you aren't familiar with it.
developer.qualcomm.com