I have an amd phenom II x4 965 Black edition. It looks like the only difference is the cores (4 compared to 6), and the level2 cache. A little over a year ago i bought my cpu for $87, so the price is very good. Very tempted to buy this, but i dont know if i would really see that much of a performance increase, or if i even need it i just use my PC for work, run VM's
Wouldn't be worth it at all. An actual 'upgrade' for you would be an AMD Vishera FX processor or an Intel i5 or i7 chip.