2.67 gigahertz Intel Core i7 920
64 kilobyte primary memory cache
256 kilobyte secondary memory cache
8192 kilobyte tertiary memory cache
Multi-core (4 total)
Hyper-threaded (8 total)
I think you no need to tell us all the CPU information, Core i7 920 will do.
You might need to give more detail such as your mainboard, possible you can use some software to gather your mainboard detail (Aida64/Everest), along with amount of RAM, and of course your current PSU so guru here can give a much accurate recommendation.