2nd generation Intel® Core™ processor family
Processor numbers¹ for the 2nd generation Intel® Core™ processor family have an alpha/numerical identifier followed by a four digit numerical sequence, and may have an alpha suffix depending on the processor. The table below explains the alpha suffixes used for the 2nd generation Intel Core processor family.
| Alpha Suffix | Description | Example |
|---|---|---|
| K | Unlocked | i7-2600K/i5-2600K |
| S | Performance optimized lifestyle | i5-2500S/i5-2400S |
| T | Power optimized lifestyle | i5-2500T/i5-2390T |
Processor numbers for the Previous Generation Intel Core processor family have an alpha/numerical identifier followed by a three digit numerical sequence.
Processor numbers for the Intel® Core™2 processor family brands are categorized with an alpha prefix followed by a four digit numerical sequence. The table below explains the alpha prefixes used for the Intel Core2 processor families.
| Alpha Prefix | Description |
|---|---|
| QX | Desktop or mobile quad-core extreme performance processors |
| X | Desktop or mobile dual-core extreme performance processors |
| Q | Desktop quad-core high performance processors |
| E | Desktop energy efficient dual-core processors with TDP greater than or equal to 55W |
| T | Mobile highly energy efficient processors with TDP 30-39W |
| P | Mobile highly energy efficient processor with TDP 20-29 W |
| L | Mobile highly energy efficient with TDP 12-19W |
| U | Mobile ultra high energy efficient with TDP less than or equal to 11.9W |
| S | Mobile small form-factor with 22x22 BGA package |
Processor numbers for the Intel® Core™2 Quad family have an alpha prefix followed by a four digit numerical sequence. Additionally, low power Intel Core2 Quad processors are identifiable by an "S" suffix which represents processors having a lower thermal design power.
¹ As Intel processors evolve and advance, Intel will integrate new feature technologies and capabilities that may increment the processor number.