In this thread I'll be highlighting some of the larger ubb's I find around the internet, if you see one in this range, feel free to post.

http://boards.wizards.com/community-bin/ultimatebb.cgi?ubb=get_daily

Almost 400 active topics, more than 131,000 members, >630,000 posts

This one's not as big, but is busier

http://www.ls1tech.com/ubb/ultimatebb.php

~11,000 members, ~440,000 posts, and almost 600 active topics

Feh, when I saw this topic, I was gonna post the WOTC URL...

hehe... and that would be?

WOTC -> Wizards of the Coast.

Isn't that the company that makes "Magic: The Gathering" ?

And D&D, among other things.

I'm sorry if I seem stupid by saying this, but I heard somewhere that if you hit 30,000 members or so, UBB classic would be horribly inefficient and you should go to UBB threads. I'm sorry if I'm wrong, but I heard it somewhere

It's not a stupid question, Charles was the one probably

UBB is written well, but your number of members and posts can slow it down significantly if your server isn't setup correctly - throw enough hardware at it and you can just about run any size forum.

In other words, hardware is the limiting factor more than anything. Most people run on shared servers, >30k members would significantly slow your forums down. Put your site on a fast server with scsi disks, xeon processors, and loads of ram and you can run it way higher than that. I've seen ubb's with 600+ people on at the same time, it mostly depends on hardware

I suppose that is the linkk charles was going to post
http://boards.wizards.com/community-bin/ultimatebb.cgi

the board i admin, the DC Message Boards , are purdy big, too!

25,000 members (should be 35,000 -- lost a "few" last year) and tens of thousands of threads (even tho everything older than 60 days gets deleted every month)

most impressively, 450 active topics... already! its not even 1pm!

average is in the ball park of 1500

25k members? That must be one hell of a server.

I am sure Hostboard.com could be considered one of the largest. Although admitedly more of a hybrid system.

Catagories - 104
Forums - 2,134
Moderators - 2,654
Posts - 755,118
Threads - 86,480
Users - 82,902

Due to the nature of Hostboard these numbers only represent today and fluctuate daily.

You don't count, man.

its one hell of an exploding server!

23,290 as of 3 pm today (with 520 active topics already!)

we've had... "problems" ... from time to time, due to the size and various bandwith issues. granted, the forum is supported by time warner, so the costs aren't a problem. but everything else is -- especially because its a old-school 5.45 ubb, which as you know, doesn't really like that "excess usage."

one such problem was the afore mentioned loss of just a few member profiles (in the ball park of 8,000!)

a big help in keeping it running smoothely is to prune all posts in all forums older than 60 days on a monthly basis. how or why that helps, i dunno, but it works so far, so i aint stoppin!

The more files in a directory, the slower things get - the OS has to search them all to open one single file. That's why pruning helps so much, and that's why we don't advise more than 20,000 members...

You should just move right up to Threads...

Simhq is far from small.

if it were my choice, we would have moved up to threads (or at least upgraded to v6) months/years ago.

however, despite my protests, wb looks to be heading in the direction of converting all their forums to wb-created boards.

hopefully, thats preventable (i can only imagine receiving 25,000 emails from people asking me why they have to reregister)

Wow, I better start advertising my board soon!

http://technoforum.dyndns.org/cgi-bin/ultimatebb.cgi
i guess my board is also some sort of 'huge' *g*
about 7oo.ooo single postings (yeah, i already kicked out 2oo.ooo old and chitchat-stuff) and nearly 1ok users so far, still growing.

so, i have to upgrade really soon to 6.5 because of some lil bugs appearing on my board and nowadays i'm still waiting for a sql-backend because of the really huge database but even ubb7.0 or ubb8.0 will be released i guess i'll be missing still that sort of backend :-/

the most interesting thing about my board is maybe the unique layout: no portal, no chat, no instantmessages and quite unique background-gfx as well as NO moderators as well as NO subcategories, no advertising, no banner and no unnecessary modules/hacks *g*