According to industry sources, AMD has decided to modify the naming scheme for their 45nm desktop processors. While AMD is keeping the Phenom X3 and Phenom X4 branding, the model numbers have changed from four digits to five digits in length.
This new numbering system has caused some confusion, but 1xx00 for lower end and 20xx0 for higher end Phenoms is a somewhat logical step up from the four-digit, Phenom 9 series numbering system. Perhaps AMD could drop the redundant zero at the end of each model number to make it easier to say these rather long names.
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Source: Tom’s Hardware
