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What is an sSpec?
The sSpec number is also known as the specification number and SL code. It is a five character string (SL36W, SR00B, etc.) that is printed on and used to identify the processor.
Do all processor numbers have the same sSpec?
The same processor number can have different sSpecs. The reason is because when a processor stepping change occurs, a new sSpec is generated for that stepping. It is also true that the same stepping level can also have more than one sSpec associated with it.
What is a stepping?
In it's simplest form, it is a revision of the processor silicon. These are divided into two types. One type is called a full-layer stepping in which all the masks used to create the silicon can change. The other type is called a metal-layer stepping in which only the masks which are regenerated are the metal layers, allowing for fewer possible changes.
When steppings change, what is the naming convention?
Each stepping gets a different name. The usual naming convention is to change the letter of a stepping on each full-layer stepping and change the number of a stepping on the metal-layer stepping. As an example, the first full-layer stepping from A0 would typically be B0 and the first metal-layer stepping from A0 would be A1.
Where can the sSpec be found?
You can find this number by looking at the markings on the processor top-side (see Figure 1), or on the label that came with your boxed processor(see Figure 2). The location may vary on the processor top-side and label, however, those are the two locations where the sSpec will reside.
Figure 1
Figure 2
Where can I find more information about my processor based on the sSpec or processor number information?
For processor specifications and comparisons, Intel recommends visiting the following site: http://ark.intel.com. You can use the search box in the upper right hand corner to find your processor specifications. Some of the searchable terms include sSpec, processor number, processor codename, product order code, or brand name. You also have the option of using the menu to drill down on the information for the processor you are looking for.
You can also find out more information in the processor family technical documents page under the datasheet section and specification update section. Click on this link to see an example: Intel® Core™ i7 Technical Documents
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