The FX series definitely has a later processing chip in it (more up to date). Hope this helps. Also please remember to pick your best solution so other people may learn from your thread. Thank you for your time, and have a good day.
In gaming the Phenom II x4 965 will outperform the 4130, if possible go with the 4300 because that will be a slight jump over both and its only slightly more expensive. Also if you do get the 965 the overclock potential for it is better than the 4130.