Tag Archive for 'CPU'

CPU Specification number or S-spec number

Specification number, or S-spec number, is a five character code that uniquely identifies such CPU characteristics as core frequency, bus frequency, the size of level 2 cache, thermal design power, and so on. Specification numbers always start from letter ‘S’ and are usually printed on the top of the CPU. Intel Pentium, Pentium MMX and Celeron processors in plastic PPGA package have specification numbers printed on the bottom of the CPU. To find out processor characteristics from the specification number please use “Search by S-Spec” form on this page. We also recommend to use Intel processor finder tool.

Some examples of specification numbers: SL92C, SL7PW, SL3XX

NOTE: Intel engineering and qualification samples are marked with specification numbers that start from ‘Q’ - these are so called QDF numbers, and they are used to identify qualification and engineering samples.

Processor (CPU) model numbers

Processor model numbers are used to distinguish between microprocessors with different sets of features and different characteristics, such as speed, level 1 and level 2 cache, etc. The model numbers can be used to identify only basic features and most important characteristics, and may not be used to identify all features/parameters of the CPU. For example, model numbers never identify CPU ID, core stepping, core voltage, maximum CPU temperature and a few other parameters. If you need to find out all details on specific processor please use sSpec numbers for Intel processors or order product numbers for AMD microprocessors.

For more information on Intel model numbers please see Intel processor (model) numbers.

For more information on AMD model number please see Athlon XP, Athlon 64, Sempron and Turion model number and Opteron model numbers.