I'm a big fan of this form factor, specifically just big enough to fit a motherboard/CPU/RAM plus a real-size GPU. These all use SFX PSUs and typically just an M2 SSD on the motherboard. They also have only 2 RAM slots. The days of needing a tower are over for most people. I'm all about space-saving while still having a full-power PC. It's a niche, boutique market but there are some really interesting cases. My perso…
If you want a powerful space saving device, get a powerful laptop. If you want power, cooling, adaptability and room you get a tower.
This mini desktop form factor is the worst of both worlds.
There are laptops with 16 threads, a 3080, 2x nvme and 2x ram slots and weigh 5lbs that run at 70C at full throttle, 40C idling - oh and integrated 3 hour UPS.
A tower otoh can fit 8+ disks, 2 or 3 gpus, plenty of quiet cooling and most importantly doesn't make you cuss every time you add/change a component because there is lots of room to get your hands in there.
You want a portable tower? Get one with handles on it. How often do you really move it anyway.