There’s plenty you can change to improve fuel economy without replacing the entire engine design.
Fuel maps (potentially at the expense of power)
Transmission shift maps (at the expense of acceleration)
Lighter materials elsewhere in the car (this one actually is better for performance too!)
Better stock tires
Final drive ratio (again, sacrificing acceleration) or gearing in the transmission if necessary.
Compromises will be have to be made for sure, but they can be spaced out so all the legwork doesn’t have to be done at once.
Of course I didn’t even mention hybridization because that’s not a minor change, but some manufacturers might still opt for it and you could keep the same engine technically.
Chiplets are still fairly close to each other, they need to be cooled. We’re going to need some massive cooling solutions here. Fortunately ARM has great power efficiency at least compared to x86.
Of course SoCs are also the death of upgradablity. You upgrade everything at once or nothing at all, since CPU, GPU and RAM are all part of the same package.
People keep saying you can’t use Nvidia GPUs with Linux or that the experience is horrible, but truth be told, if you already have one, you can keep it no problem. The main scenario where it still had issues as of last year was if you used KDE Plasma with Wayland on Nvidia (though I hear Plasma 6 improved a lot of it - not sure, because I didn’t have a lot of issues on Plasma 5 either).
Your best bet for Nvidia GPUs is an Ubuntu-based distro. Ubuntu itself is an option though not necessarily the best - they bake in some ads and a lot of people aren’t fans of being forced to use Snap, which has a proprietary backend unlike Flatpak. Personally I’d say go for Linux Mint with the Cinnamon desktop if you want a Windows-like desktop environment and Pop!_OS if you want something completely different altogether from Windows. On Mint or Ubuntu you can install the drivers from the provider proprietary driver installer (super simple), on Pop!_OS you can just get a Nvidia iso and have them preinstalled.
But honestly, I didn’t even have issues with Nvidia when I was on Gentoo, supposedly one of the harder distros to maintain.
Would I buy a Nvidia GPU now that I’ve completely ditched Windows? Probably not, but I’m also not in a hurry to replace my 3060 Ti just to get rid of the logo.
I was satisfied with Apple Music myself (until I no longer had need for it), but I keep hearing that Tidal is one of the better services if Apple doesn’t quite cut it for you. Supposedly they have a reasonably fair cut for the artists compared to Spotify, and also good audio quality (to be fair, Apple has high quality available too, if you enabled it in the settings)
I have no problem with ARM chips in PCs. I’ve loved every Apple Silicon Macbook I’ve had (one personal, 2 for different jobs). But for my gaming PC, I want the raw power of x86-64 and I want a socketed CPU and a GPU that goes in the PCI-E slot, not an SoC soldered onto the motherboard that includes everything.
I think ARM servers are also an interesting use case. The efficiency advantage is more significant at the data center level than for most desktop or laptop users (yea 25 hours of battery life is cool, but my work laptop is docked all the time anyway)
I’ve used them to move, to haul furniture or copious amounts of firewood… And 2 out of the 3 I’ve owned have had ridiculous mileages put on them by previous owners, while still maintaining reliability as far as the powertrain is concerned (admittedly, I’ve had to deal with minor electric issues and obviously I’ve replaced some control arms and tie rods).
Thought trucks were cool when I was a kid, but now I just don’t see them being practical or economical enough considering the last year of my life has involved an average of 1000 km weekly.