On top of that, A 150mb page kept locking up Firefox. I have multiple tabs open, so maybe that didn't help but I had to back out of the page for fear that it'll crash.
I hope we get multi-process Firefox soon. Or that Mozilla ships a lightweight browser using their new "Servo" web render engine (Rust based).
It's so annoying that a single tab can crash the whole browser, and it's also a security risk on Windows. The common "sandbox" model there is to spawn child processes with very limited user rights (like IE 8+, Chrome, Safari+Webkit2).
And I hope we won't have it (although I know they are working on it and it's on the roadmap, so I have no illusion).
Given the number of tabs I have constantly open, I know that Chrome cannot handle it (I guess IE is the same here) and a multiprocess firefox won't either.
To be honest, I did not experience it first hand myself, because I've read this behaviour from many other people.
What I know is that I have more than 300 tabs in Firefox currently, both on my home machine and my work machine, and I don't have any problems with it.
Edit: And I would add that my task manager is also not polluted with hundreds of chrome processes.
There are extensions or settings in most browsers that will lazy-load tabs for you. No transfer or rendering occurs until you open the tab.
That aside, what could possibly require opening 300 tabs? That must be an absolute productivity killer... Why not use a bookmark manager or "read later" service or something?
I don't know what would need 300, but if I'm in the middle of working on a project, I might [open link in new tab] dozens of tutorials, docs and other resources as I gradually become more familiar with the domain and the gaps in my knowledge.
Sure, they should get pruned to bookmarks, but you can't argue if a person's method of staying in the "zone" works for them, I suppose.