They are almost identical.. The FX 4130 is EVER so slightly better in multi Threaded tasks, the 760K is EVER so slightly better in single threaded tasks.. The 760K uses the FM2 platform, which has less of a choice of CPU's, which is far less future proof if he wanted to upgrade.. the AM3+ platform that the 4130 uses is far more future proof as he can upgrade to a better 4,6 or 8 core CPU if he wanted to, there is also a wider range of boards for this socket, too.. If I were him I would buy the 4130...