8 or 16 gigabytes of RAM (got an upgrade)
8 virtual desktops, about 5 occupied with browser windows
1 to 20 windows per desktop
1 to 20 tabs per window
That is likely 100 to 300 tabs total. No, I really don't want to close them. I want more open, but performance is a problem. I like to keep going back to tabs that have been open for months. It hurts to close tabs because then I lose track of what I am working on; the scroll bar position matters and the page might even be gone from the web. Sometimes I write a comment on a web site like this one, then let it sit for days if I am unsure I want to post it.