I have a 2 GHz Intel Core Duo 2 GB and I am running Tiger (10.4.11). I don't know about you but even when I run one WoW I don't have good performance. Hasn't held me back any but during 25 mans I am getting like 5fps. The only time that I really had a problem was when I was trying to tank Vashj's adds (can't really predict where they are coming from so it was hard to grab them up quickly).

Send your self some friends requests and try it out. It was alot of fun really laggy but alot of fun. I am trying to figure out if I want the new 24 inch alu iMac or building a computer to just to dual box.

Oh and my macbook is black that might have something to do with the performance