Originally Posted by
Kagthul
The short answer to your question is:
you cant. There is no phone out there that has the muscle of a high-end PC. Zero many.
About the closest you can get is an iPhone (the CPU is basically just a cut-down M1) but it wont have the RAM to make trying to manage dozens or hundreds of tabs pleasant. No mobile device will. Even then, i cant even imagine trying to manage hundreds of tabs on a mobile browser (which dont, stricty speaking, have tabs on phones) with a single window. That'd be a damn nightmare.
About the best device you could get that is "mobile" is an iPad Pro (it has a full-up M1 that is only marginally slower than the M1 in a Macbook Air or Mac Mini (limited by thermals). But that still only has 8GB of RAM (though iPadOS manages RAM quite well) and you're still limited to just two windows side-by-side. And you're still stuck on a tiny 11" screen, unless you opt for the 12.9" model... which is still pretty small for that how much real-estate you really need. And it doesn't behave quite like a full up desktop even with mouse and keyboard support.
Android tablets - just.... well, just dont. Even the high end ones with good specs are slow compared to an iPad and certainly arent going to behave like a desktop.
Your next choice would be a convertible Chromebook (one that can be used as a tablet) which gets you real-deal desktop Chrome, and support for Android apps, but, again, we're not talking powerhouse machines here. The detachable/convertible types tend to top out at upper-midrange specs due to heat issues, and you're not going to find a Chromebook with more than 8GB of RAM in this category (though, again, ChromeOS is quite lightweight and like iPadOS manages its RAM quite well). But an enjoyable or usable 100+ tabs experience is not going to be a thing. FWIW, i use one for a lot of my daily driving now (living room computing, mobile computing, etc) and its pretty solid but i cant imagine trying to manage that many tabs on an 11" screen. (I use the HP Chromebook X2 11). Its a great little device, but massive tab swapping.. no. And its kinda expensive (MSRP 600$). Lenovo sells a nearly identical device (slightly newer CPU (Snapdragon 7Cv2 vs the V1 in the HP, marginally better battery life but performance is pretty much identical, but less RAM at 4GB vs 8) called the Duet 3 that is 339$. They also sell a larger (iPad Pro sized) Duet 5, which has 8GB of RAM and the same 7c v2.
So, short answer: not going to happen. Phones and even tablets just dont pack that kind of hardware.
Longer answer:
lets address your ergonomic issues. What is the problem? Sitting for long periods? Carpal Tunnel or similar RSI?
Its probably better to simply address those issues and continue using a desktop machine to do work. Even if you want to be able to use it in other rooms, that can be accomplished with screen casting (easiest way would be with Steamlink via an Android TV dongle) and wireless keyboards and mice.
Let us know.