The Intel® Processor Identification Utility includes a field on the CPUID data tab that reports the CPU stepping information for the tested processor. This field is part of the CPUID string, and reports the actual manufacturing stepping value of the processor in hexadecimal form.
The CPU stepping value is not the same as core stepping. The Intel Processor Identification Utility does not include core stepping values.
The Product Specifications and Comparisons tool provides both CPU stepping and core stepping information for each processor sSpec listed.