Instead of asking people all the time, please look it up here using the sSpec number:
http://processorfinder.intel.com/List.aspx?ProcFam=2774&sSpec=&OrdCode
Your sSpec number is either an SL9UM or an SLACR, at the moment, and that is noted both on the physical cpu, as well as on the box.
Looking it up gives you the Stepping, and also gives you other information about the cpu too.
.
http://processorfinder.intel.com/List.aspx?ProcFam=2774&sSpec=&OrdCode
Your sSpec number is either an SL9UM or an SLACR, at the moment, and that is noted both on the physical cpu, as well as on the box.
Looking it up gives you the Stepping, and also gives you other information about the cpu too.
.