Agree with everyone here. The Q9550 is a great choice if you are on a tight budget. You can get a full featured motherboard such as a Gigabyte GA-EP45-UD3L for about $90 and 4 GB of RAM for around $50. And combined with a good heatsink, it will generally OC past 3.5 GHz.
Otherwise, get an i5.
Message edited by jsc on 09-25-2009 at 12:08:48 AM