Is the Phenom II an entirely different micro-architecture than the original Phenom processor? Or did they just make some changes, such as a die shrink from 65nm to 45nm, increase the cache sizes and such? How much faster is a Phenom II X4 965 BE than a Phenom X4 9950 BE both @ stock clock speeds? I heard that the original Phenom X4 processors always had One faulty core, and only Three of the Four cores were functional. Some of the caches on the other few cores were also faulty and did not work according to some unconfirmed rumor. When comparing a Phenom II X4 965 @ 3.4 GHz to my C2Q Q9400 @ 2.66 GHz, how much faster will the Phenom II be? I'm building a new AMD gaming rig and wanted to get the best AMD hardware for my budget within $2,000. I also want to do thorough research on the hardware to ensure that it is a solid upgrade in terms of performance when compared to my Gateway FX6710-01 gaming desktop.