I've got a Compaq R3000 with 512GB memory and an Athlon 2.8GB processor. It does fine for running graphics, but I don't use it for any heavy renders. I got it for the same reasons you're contemplating--I wanted to be able to take my Poser projects with me. Gaming, at least the online, graphics heavy kind, is going to be much more demanding than your average Poser/Painter/etc. session, unless you're trying to do a full-blown render of a large scene.