The Xiaomi 15 Ultra that ran Geekbench AI could be a prototype or pre-release model. After all, it scored rather low on the test. Perhaps, the tester didn’t choose to use the hardware-accelerated NPU ...
The Boox Note Air 4C is a color e-ink reader, a digital notebook, and an (almost) full-fledged tablet computer in one. It's not a device for everyone, but it's an excellent version of what it is.