About Intel® Processor Numbers

Intel® processors

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.

View processor specifications and compare processors >
View processor performance benchmarks >

Mobile Device Processors

Intel® Core™ M processor family

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.

  

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

Laptop, Desktop, and Mobile Device Processors

4th generation Intel® Core™ processor family

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 >

 

 

Processor name = brand (Intel® Core™) + modifier (i7) + gen (4) + SKU (770) + product line (K)

 

 

Processor name = brand (Intel® Core™) + modifier (i7) + gen (4) + SKU (900) + product line (M) + letter suffix (Q)
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 i7-4900MQ 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 processor
Y Extremely low power Intel Core i7-4610Y processor

3rd generation Intel® Core™ processor family

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 >

                      

Processor name = brand (Intel® Core™) + modifier (i7) + gen (3) + SKU (770) + product line (K)

  

Processor name = brand (Intel® Core™) + modifier (i7) + gen (3) + SKU (920) + letter suffix (X) + product line (M)

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

2nd generation Intel® Core™ processor family

Processor numbers 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.

Processor name = brand (Intel® Core™ processor) + number (i7-2600)
Processor name = brand (Intel® Core™ processor) + number (i7-940)

Processor numbers for the previous generation Intel Core processor family have an alpha/numerical identifier followed by a three-digit numerical sequence.

Processor name = brand (Intel® Core™2 Duo processor) + number (E8500)

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 name = brand (Intel® Core™2 Quad processor) + number (Q9550S)

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.

Intel® Atom™ processors

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 name = brand (Intel® Atom™ processor) + number (330)

 

Processor name = brand (Intel® Atom™ processor) + number (N270)

Intel® Pentium® processors

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.¹ A higher number processor may also have more of one feature and less of another.

Processor name = brand (Intel® Pentium® processor) + number (E2200)

Intel® Celeron® processors

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.¹ A higher number processor may also have more of one feature and less of another.

 

Processor name = brand (Intel® Celeron®  processor) + number (450)

 

Processor name = brand (Intel® Celeron® processor) + number (E1200)

Server and Workstation Processors

Intel® Xeon® processor E3, E5, and E7 families and Intel® Xeon Phi™ product family

The latest Intel® Xeon® processor numbering system is an alpha numeric representation of product line, product family, and version. An "L" suffix will be used to identify a low power processor. The version number will not be used in the first processor generation.

Processor name = brand (Intel® Xeon Phi™ processor) + performance shelf (5) + gen indicator (1) + SKU numberic digits (10) + product line suffix (P)
Processor name = brand (Intel® Xeon Phi™ processor) + performance shelf (7) + gen indicator (1) + SKU numberic digits (10) + product line suffix (P)

 

 

Processor Family Product Line System Type
Intel® Xeon® processor E7 Multi-processor
Intel® Xeon® processor E5 Multi-processor
Intel® Xeon® processor E3 Single-processor

Intel® Xeon® and Intel® Itanium® processors

Intel® Xeon® and Intel® Itanium® processor numbers are categorized in four digit numerical sequences, and may have an alpha prefix to indicate power and performance.

Processor name = brand (Intel® Xeon® processor) + number (X5482)
Alpha Prefix Description
X Performance
E Mainstream (rack-optimized)
L Power-optimized

Intel® Xeon® and Intel® Itanium® processor families and their number sequence

Processor Family Number Sequence System Type
Intel® Itanium® processor 9000 Multi-processor and dual-processor
Intel® Xeon® processor 7000 Multi-processor
Intel® Xeon® processor 5000 Dual-processor
Intel® Xeon® processor 3000 Single-processor