About Intel® Processor Numbers

The processor number is one of several factors, along with processor brand, specific system configurations, and system-level benchmarks, to be considered when choosing the right processor for your computing needs.

A higher number within a processor class or family generally indicates more features, but it may be more of one and less of another. Once you decide on a specific processor brand and type, compare processor numbers to verify the processor includes the features you are looking for.

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Desktop and Mobile Processors

Processor numbers for the 7th Generation Intel® Core™ processors use an alphanumeric scheme based on generation and product line following the brand and its modifier. The first digit in the four-number sequence indicates the generation of processor, and the next three digits are SKU numbers. Where applicable, an alpha suffix appears at the end of the processor name, which represents the processor line. Intel® High End Desktop processors follow a different numbering scheme due to the difference in their feature set.

Get the details for Intel® High End Desktop Processors

Alpha Suffix Description Example
Moblie
Y Extremely low power 7th Gen Intel® Core™ i7-7Y75 processor
U Ultra-low power 7th Gen Intel® Core™ i7-7500U processor

Processor numbers for the 6th Generation Intel® Core™ processors use an alphanumeric scheme based on generation and product line following the brand and its modifier. The first digit in the four-number sequence indicates the generation of processor, and the next three digits are SKU numbers. Where applicable, an alpha suffix appears at the end of the processor name, which represents the processor line. Intel® High End Desktop processors follow a different numbering scheme due to the difference in their feature set.

Get the details for Intel® High End Desktop Processors

Alpha Suffix Description Example
Desktop
K Unlocked 6th Gen Intel® Core™ i7-6700K processor
6th Gen Intel® Core™ i5-6600K processor
T Power-optimized lifestyle 6th Gen Intel® Core™ i7-6700T processor
6th Gen Intel® Core™ i5-6600T processor
6th Gen Intel® Core™ i3-6300T processor
Mobile
H High performance graphics 6th Gen Intel® Core™ i3-6100H processor
HK

High performance graphics, unlocked

6th Gen Intel® Core™ i7-6820HK processor
HQ High performance graphics, quad core 6th Gen Intel® Core™ i7-6920HQ processor
6th Gen Intel® Core™ i7-6700HQ processor
U Ultra-low power 6th Gen Intel® Core™ i7-6600U processor
6th Gen Intel® Core™ i5-6300U processor
6th Gen Intel® Core™ i3-6100U processor

The latest Intel® Xeon® processor numbering system is an alpha numeric representation of product line, product family, and version. Where applicable, an alpha suffix appears at the end of the processor name, which represents the processor line. The version number will not be used in the first processor generation.

Processor numbers for the 5th Generation Intel® Core™ processors use an alphanumeric scheme based on generation and product line following the brand and its modifier. The first digit in the four-number sequence indicates the generation of processor, and the next three digits are SKU numbers. Where applicable, an alpha suffix appears at the end of the processor name, which represents the processor line. Intel® High End Desktop processors follow a different numbering scheme due to the difference in their feature set.

Get the details for Intel® High End Desktop Processors

Alpha Suffix Description Example
Desktop
C Unlocked desktop Processor based on the LGA 1150 package with high performance graphics 5th Gen Intel® Core™ i7-5775C processor
5th Gen Intel® Core™ i5-5675C processor
R Desktop processor based on BGA1364 (mobile) package with high performance graphics 5th Gen Intel® Core™ i7-5775R processor
5th Gen Intel® Core™ i5-5675R  processor
5th Gen Intel® Core™ i5-5575R processor
Mobile
H High performance graphics 5th Gen Intel® Core™ i5-5350H processor
HQ High performance graphics, quad core 5th Gen Intel® Core™ i7-5950HQ processor
5th Gen Intel® Core™  i7-5850HQ processor
5th Gen Intel® Core™  i7-5750HQ processor
5th Gen Intel® Core™ i7-5700HQ processor
U Ultra-low power Intel® Core™ i7-5650U processor

Processor numbers for the Intel® Core™ M processors use an alphanumeric scheme following the modifier. Where applicable, an alpha suffix appears at the end of the processor name, which represents the processor line.

Alpha Suffix Description Example
Y Extremely low power Intel® Core™ M-5Y70 processor

Laptop, Desktop, and Mobile Device Processors

Processor numbers for the 4th Generation Intel® Core™ processors use an alphanumeric scheme based on generation and product line following the brand and its modifier. The first digit in the four-number sequence indicates the generation of processor, and the next three digits are SKU numbers. Where applicable, an alpha suffix appears at the end of the processor name, which represents the processor line. Intel® High End Desktop processors follow a different numbering scheme due to the difference in their feature set.

Get the details for Intel® High End Desktop Processors

Alpha Suffix Description Example
Desktop
K Unlocked Intel® Core™ i7-4770K processor
R Desktop processor based on BGA1364 (mobile) package with high performance graphics Intel Core i7-4770R processor
S Performance-optimized lifestyle Intel Core i7-4770S processor
T Power-optimized lifestyle Intel Core i7-4770T processor
Mobile
HQ High performance graphics Intel® Core™ i7-4700HQ processor
MX Mobile extreme edition Intel Core i7-4940MX processor Extreme Edition
MQ Quad-core mobile

Intel Core i7-4702MQ processor

Intel Core i7-4702MQ processor

M Mobile

Intel Core i7-4600M processor

Intel Core i5-4300M processor

U Ultra-low power Intel Core i7-4550U
Y Extremely low power Intel Core i7-4610Y processor

Processor numbers for the 3rd Generation Intel® Core™ processors use an alphanumeric scheme based on generation and product line following the brand and its modifier. The first digit in the four-number sequence indicates the generation of processor, and the next three digits are SKU numbers. Where applicable, an alpha suffix appears at the end of the processor name, which represents the processor line. Intel® High End Desktop processors follow a different numbering scheme due to the difference in their feature set.

Get the details for Intel® High End Desktop Processors

Alpha Suffix Description Example
Desktop
K Unlocked Intel® Core™ i7-3370K processor
Intel Core i5-3570K processor
S Performance-optimized lifestyle Intel Core i7-3770S processor
Intel Core i5-3550S processor
T Power-optimized lifestyle Intel Core i7-3770T processor
Intel Core i5-3570T processor
Mobile
M Mobile Intel® Core™ i7-3520M processor
QM Quad-core mobile Intel Core i7-3820QM processor
U Ultra-low power Intel Core i7-3667U processor
Y Extremely low power Intel Core i7-3689Y processor

Processor numbers for the 2nd Generation Intel® Core™ processor family have an alphanumerical 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.

Processor numbers for the previous generation Intel® Core™ processor family have an alphanumerical 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 Core 2 processor family.

Alpha Prefix Description
QX Desktop or mobile quad-core extreme performance processors
X Desktop or mobile dual-core extreme performance processors
Q Mobile quad-core high performance processors
E Desktop energy efficient dual-core processors with TDP greater than or equal to 55 W
T Mobile highly energy efficient processors with TDP 30-39 W
P Mobile highly energy efficient processor with TDP 20-29 W
L Mobile highly energy efficient with TDP 12-19 W
U Mobile ultra high energy efficient with TDP less than or equal to 11.9 W
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 Core 2 Quad processors are identifiable by an "S" suffix, which represents processors having a lower thermal design power.

Processor numbers for the Intel® Atom™ processor family are categorized by a three-digit numerical sequence. Netbook class Intel® Atom™ processors have an alpha prefix of N, and Intel Atom processors with an alpha prefix of Z indicate the processor is for Mobile Internet Devices (MIDs). A higher number within a processor class or family generally indicates more features. A higher processor number may have more of one feature and less of another.

Processor numbers for the Intel® Pentium® brand have an alpha prefix followed by a four-character numerical sequence. All are desktop energy-efficient dual-core processors with TDP that is greater than or equal to 65 W. A higher number within a processor class or family generally indicates more features such as cache, clock speed, front side bus, or other Intel® technologies. A higher number processor may also have more of one feature and less of another.

Processor numbers for the Intel® Celeron® brand are expressed with either a three-digit numerical sequence or a five-character sequence with an alphabetical prefix and four digits, depending on the processor type. A higher number within a processor class or family generally indicates more features such as cache, clock speed, front side bus, or other Intel® technologies. A higher number processor may also have more of one feature and less of another.