Just something I want to confirm/deny for my own thirst for knowledge

If you set up another ubbthreads forum (ie, fresh install) and then archived a load of posts from your open forums (eg, all posts over 6 months old) to the archived forum, would that help reduce server load?
I know it would be a PITA for members to search 2 sets of forums, and I have no immediate plans on doing so, but I'm just curious more than anything else.