On the 965 BE, the CPU performance is good, the TDP isn't. It has a max specified temperature of 60°C and is running at 70+ with the boxed cooler once you put enough load on it (e.g. running 1.0). I had to buy a (large) aftermarket cooler to get it to barely under 60°C under load. High temps decrease component lifetime, and overclocking would push the temps even further. I don't think it's a good upgrade choice, better go for the X6 series because I heard the later models got the temps under control.