I want to try Ubuntu on a desktop I just got, DEll Optiplex 755. It is a bit old, I think 2007. Will the new version of Ubuntu work on it? I am most worried about RAM and hard-drive space, and whether the graphics will work.
Your friend here is a Live CD or even better a Live Flash Drive
This way you can try it on for size and see how it goes.
I'd go with Alex and suggest you try lighter versions of Ubuntu. Alex said Lubuntu, which I don't know, but I use Xubuntu daily on a 2006 entry-level machine and I like it. I also run it on a 1999 secondary machine and it's flawless. Some may say the look is spartan, I'd say it is modest and unobtrusive.
Anyway the basic answer to your question is : "Yes, it will work well".
