It's still vastly superior in usability insignificant ways. Easy reproduction, full text search, physical size, etc.
I've tried a couple of others and apart from incredibly slow scrolling in the app drawer it really is decent. I like the tasks and calendar integration a lot.
Those are usually just FATs. The left cap pops off and exposes a USB port. The player itself shows up as a thumb drive.
Our modern 64 bit processors do use 128 bits for certain vector operations though, don't they? So there is another aspect apart from address space.
Compared to physical encyclopedias that's still quick.