In fact, the nomenclature of Socket 754 models shouldn?t change so we don?t publish it here. Socket 939 variants are also predictable: the frequencies grow by 200MHz, the models add 300+ points to their names. Note that processors for the Socket 939 have higher numbers than their Socket 754 counterparts (the frequency being equal, but Socket 754 CPUs having larger cache). Supposing that the increase of 300 points in the model number equals to 10% performance growth, we have that Socket 939 systems will be faster than their Socket 754 counterparts by 5%. These numbers are an approximation, of course. Note also that the L2 cache is 512KB for Socket 939 CPUs (the Newcastle core).