I have a dell inspiron 660 and all the parts are still stock for about two years. I am looking into buying the 600W PSU http://www.amazon.com/gp/product/B00ALK3HF4/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B00ALK3HF4&linkCode=as2&tag=viglink20237-20. I am also wanting to buy a new GPU that can run on a Intel Core i5 and a 600W PSU. I have a budget of $150-$200. I'm new to this whole computer thing and I want some help.