CPU-World logo News · Chips · Information · Forum · Links · About
Search   Identify
Identification · Pinouts · S-Spec numbers · Glossary

Intel Modern CPUs (Pentium II - Pentium 4, Celeron, Core Solo, Core Duo, Core 2, Xeon) identification


Modern OEM CPUs | Modern Boxed CPUs | 80486 | Pentium | Pentium II | Pentium III | Other Intel CPUs

To identify Intel processor by OEM part number please type into the part number without spaces in the field on the right and click "Go":   
 

  Modern OEM CPUs identification  
Related links: Celeron | Celeron_D | Celeron_M | Pentium II | Pentium III | Pentium_4 | Pentium_Extreme_Edition | Pentium_M | Pentium_D | Core_Solo | Core_Duo | Core_2 | Pentium_Dual-Core | Itanium | Timna | Xeon | Atom
1 2 3 4 5 6  
JM 80547P G 072 1M M  
 
6. Extra CPU features
E    Execute disable bit (Atom)
G   Trusted Execution Technology (Core 2)
M   Extended Memory 64 Technology (Pentium 4)
N   Extended Memory 64 Technology (Celeron D / Pentium 4)
No Virtualization technology (Pentium D / Core Quad / Core 2 Duo Mobile)
H   Virtualization technology
P   Reduced power consumption
T   ???
U   Unlocked multiplier (Core 2 Duo Mobile)
W   HyperThreading and Virtualization technologies (Atom)
EC   L2 cache with ECC support (Pentium II)
PE   L2 cache with ECC support (Pentium II)
 
  5. L2 or L3 (Xeon MP, Pentium 4 EE) cache size
This parameter specifies L3 cache size for Xeon MP processors and some Pentium 4 Extreme Edition CPUs. For all other microprocessors this parameter specifies L2 cache size.
0M   No L2 cache
128   128 KB
256   256 KB
256K   256 KB
512   512 KB
512K   512 KB
1M   1 MB
15M   1.5 MB
2M   2 MB
3M   3 MB
4M   4 MB
6M   6 MB
8M   8 MB
9M   9 MB
003   12 MB
007   16 MB
009   18 MB
015   24 MB
CN   256 KB, Extended Memory 64 Technology (EM64T) (Celeron D)
D   Shared 512 KB
F   Shared 2 MB
G0K   256 KB
G1M   1 MB L3 cache
LK   24 MB
N   12 MB
 
    4. Frequency (MHz) or frequency identifier
Numbers above 200 are processor frequencies in MHz.
Numbers below 200 can be used to identify processor frequency, but there is no easy way to convert them to frequency. For a rough estimate of frequency in GHz use formula "(number + 39) / 40". For instance, for "083" estimated frequency will be (83 + 39) / 40 = 3.05 GHz.
 
      3. Bus speed
C   400 MHz (effective), 100 MHz (actual)
E   533 MHz (effective), 133 MHz (actual)
F   667 MHz (effective), 166 MHz (actual)
G   800 MHz (effective), 200 MHz (actual)
H   1066 MHz (effective), 266 MHz (actual)
J   1333 MHz (effective), 333 MHz (actual)
L   1600 MHz (effective), 400 MHz (actual)
100 MHz, low voltage - mobile Celeron and mobile Pentium III
U   100 MHz, ultra low voltage
X   66 MHz (100 MHz for Intel Pentium II Xeon)
Y   100 MHz
Z   133 MHz
 
        2. CPU family and Microprocessor core
80521E   Pentium Pro (0.35 micron)
80522P   Pentium II (Klamath core, 0.35 micron)
80523K   Pentium II Xeon (Drake core, 0.25 micron)
80523P   Pentium II (Deschutes core, 0.25 micron)
80523T   Mobile Pentium II (Deschutes, 0.25 micron)
80524K   Mobile Celeron and Mobile Pentium II (Mendocino core, 0.25 micron)
80524N   Mobile Celeron (Mendocino core, 0.25 micron)
80524R   Celeron (Mendocino core, 0.25 micron)
80524T   Mobile Pentium II (Mendocino core, 0.25 micron)
80525K   Pentium III Xeon (Tanner core, 0.25 micron)
80525P   Pentium III (Katmai core, 0.25 micron)
80526G   Mobile Pentium III (Coppermine core, 0.18 micron)
80526K   Pentium III Xeon (Cascades core, 0.18 micron)
80526L   Low-power Mobile Celeron (Coppermine core, 0.18 micron)
80526N   Mobile Celeron (Coppermine core, 0.18 micron)
80526P   Pentium III (Coppermine core, 0.18 micron)
80526R   Celeron (Coppermine core, 0.18 micron)
80528K   Xeon (Foster core, 0.18 micron, 256 KB L2 cache)
Xeon MP (Foster MP core, 0.18 micron, 512 KB or 1 MB L2 cache)
80528P   Desktop Pentium 4 (Willamette core, 0.18 micron, socket 423)
80529R   Timna (0.18 micron)
80530G   Mobile Pentium III-M (Tualatin core, 0.13 micron)
80530K   Pentium III-S (Tualatin core, 0.13 micron)
80530L   Low-power Mobile Pentium III-M (Tualatin core, 0.13 micron)
80530M   Low-power Mobile Celeron (Tualatin core, 0.13 micron)
80530N   Mobile Celeron (Tualatin core, 0.13 micron)
80530P   Pentium III (Tualatin core, 0.13 micron)
80530R   Celeron (Tualatin core, 0.13 micron)
80530V   Ultra low-power Mobile Celeron (Tualatin core, 0.13 micron)
80530W   Mobile Celeron (Tualatin core, 0.13 micron)
80530U   Ultra low-power Mobile Pentium III-M (Tualatin core, 0.13 micron)
80531P   Desktop Pentium 4 (Willamette core, 0.18 micron, socket 478)
80531R   Celeron (Willamette core, 0.18 micron, socket 478)
80532E   Low-power Xeon (Prestonia core, 0.13 micron)
80532G   Mobile Pentium 4 and Mobile Pentium 4-M (Northwood core, 0.13 micron)
80532H   Mobile Pentium 4 with Hyper-Threading technology (Northwood core, 0.13 micron)
80532K   Xeon (Prestonia core, 0.13 micron)
Xeon or Xeon MP (Gallatin core, 0.13 micron)
80532N   Mobile Celeron (Northwood core, 0.13 micron)
80532P   Desktop Pentium 4 (Northwood core, 0.13 micron)
80532R   Celeron (Northwood core, 0.13 micron)
80533N   Mobile Celeron (Coppermine core, 0.18 micron)
80534P   Desktop Pentium 4 (Northwood core, 0.13 micron)
80534R   Celeron (Northwood core, 0.13 micron)
80535G   Pentium M (Banias core, 0.13 micron)
80535L   Low-power Pentium M (Banias core, 0.13 micron)
80535N   Celeron M (Banias core, 0.13 micron)
80535V   Low-power Celeron M (Banias core, 0.13 micron)
80535U   Ultra low-power Pentium M (Banias core, 0.13 micron)
80536G   Pentium M (Dothan core, 0.09 micron)
80536L   Low-power Pentium M (Dothan core, 0.09 micron)
80536N   Celeron M (Dothan core, 0.09 micron)
80536V   Low-power Celeron M (Dothan core, 0.09 micron)
80536U   Ultra low-power Pentium M (Dothan core, 0.09 micron)
80537G   Core 2 Duo Mobile (Merom core, 0.065 micron, > 1 MB L2 cache)
Pentium Dual-Core (Merom core, 0.065 micron, 1 MB L2 cache)
80537L   Low-power Core 2 Duo Mobile (Merom core, 0.065 micron)
80537N   Celeron M (Merom / Merom-L core, 0.065 micron, 1 MB L2, 533 MHz FSB)
Celeron Dual core (Merom / Merom-L core, 0.065 micron, 512 KB L2 cache or 667 MHz FSB)
80537V   Ultra low-power Celeron M (Merom / Merom-L core, 0.065 micron)
80537U   Ultra low-power Core 2 Duo Mobile (Merom core, 0.065 micron)
80538G   Core Solo (Yonah core, 0.065 micron)
80538K   Embedded Celeron (Sossaman core, 0.065 micron)
80538N   Celeron M (Yonah core, 0.065 micron)
80538U   Ultra-low power Core Solo (Yonah core, 0.065 micron)
80538V   Ultra-low power Celeron M (Yonah core, 0.065 micron)
80539J   Ultra low-power Xeon (Sossaman core, 0.065 micron)
80539K   Low-power Xeon (Sossaman core, 0.065 micron)
80539G   Core Duo (Yonah core, 0.065 micron)
80539U   Low-power Core Duo (Yonah core, 0.065 micron)
80541K   Itanium (Merced core, 0.18 micron)
80542K   Itanium 2 (McKinley core, 0.18 micron)
80543K   Itanium 2 (Madison core, 0.13 micron)
80546H   Mobile Pentium 4 with Hyper-Threading technology (Prescott core, 0.09 micron, micro FC-PGA package)
80546J   Low-power Xeon (Irwindale core, 0.09 micron, 2 MB L2 cache)
80546K   Xeon (Nocona core, 0.09 micron, 1 MB L2 cache)
Xeon (Irwindale core, 0.09 micron, 2 MB L2 cache)
Xeon MP (Cranford core, 0.09 micron, 1 MB L2 cache)
Xeon MP (Potomac core, 0.09 micron, 1 MB L2 cache, 4 or 8 MB L3 cache)
80546P   Desktop Pentium 4 (Prescott core, 0.09 micron, micro FC-PGA package, socket 478)
80546Q   Mid-power Xeon (Irwindale core, 0.09 micron, 2 MB L2 cache)
80546R   Celeron D (Prescott core, 0.09 micron, micro FC-PGA package, socket 478)
80547P   Desktop Pentium 4 (Prescott core, 0.09 micron, FC-LGA package, socket 775)
80547R   Celeron D (Prescott core, 0.09 micron, FC-LGA package, socket 775)
80549K   Itanium 2 (Montecito core, 0.09 micron)
80550K   Dual-core Xeon MP (Tulsa core, 0.065 micron)
80551K   Dual-core Xeon (Paxville core, 0.09 micron)
80551P   Pentium D (Smithfield core, 0.09 micron)
80552P   Desktop Pentium 4 (Cedar Mill core, 0.065 micron, socket 775)
80552R   Celeron D (Cedar Mill core, 0.065 micron)
80553P   Pentium D (Presler core, 0.065 micron)
80554V   Low-power embedded Celeron M (Dothan core, 0.09 micron)
80555K   Dual-core Xeon (Dempsey core, 0.065 micron)
80555Q   Mid-power Dual-core Xeon (Dempsey core, 0.065 micron)
80556J   Low-power Dual-core Xeon (Woodcrest core, 0.065 micron)
80556K   Dual-core Xeon (Woodcrest core, 0.065 micron)
80557K   Dual-core Xeon (Conroe core, 0.065 micron)
80557P   Core 2 Duo (Conroe core, dual-core, 0.065 micron, > 1 MB L2 cache)
Pentium Dual-Core (Conroe core, dual-core, 0.065 micron, 1 MB L2 cache)
Celeron Dual-Core (Conroe core, dual-core, 0.065 micron, < 1 MB L2 cache)
80557R   Celeron (Conroe-L core, single core, 0.065 micron)
80560K   Dual-core Xeon MP (Paxville MP core, 0.09 micron)
80562K   Quad-core Xeon (Kentsfield core, 0.065 micron)
80562Q   Mid-power Quad-core Xeon (Kentsfield core, 0.065 micron)
80562P   Core 2 Quad (Kentsfield core, 0.065 micron)
80562X   Core 2 Extreme (Kentsfield core, 0.065 micron)
80563J   Low-power Quad-core Xeon (Clovertown core, 0.065 micron)
80563K   Quad-Core Xeon (Clovertown core, 0.065 micron)
80563Q   Medium-power Quad-core Xeon (Clovertown core, 0.065 micron)
80564Q   Medium-power Dual-core Xeon MP (Tigerton core, 0.065 micron)
80565J   Low-power Quad-core Xeon MP (Tigerton core, 0.065 micron)
80565K   Quad-core Xeon MP (Tigerton core, 0.065 micron)
80565Q   Medium-power Quad-core Xeon MP (Tigerton core, 0.065 micron)
80566U   Atom (0.045 micron)
80569A   Core 2 Quad (Yorkfield core, quad core, 0.045 micron)
80569K   Quad-core Xeon (Yorkfield core, 0.045 micron)
80569P   Core 2 Quad (Yorkfield core, quad core, 0.045 micron)
80569X   Core 2 Extreme (Yorkfield core, quad core, 0.045 micron)
80570A   Core 2 Duo (Wolfdale core, dual-core, 0.045 micron)
80570K   Dual-core Xeon (Wolfdale core, 0.045 micron)
80570P   Core 2 Duo (Wolfdale core, dual-core, 0.045 micron)
80571P   Core 2 Duo (Wolfdale core, dual-core, 0.045 micron, > 2 MB L2 cache)
Pentium Dual-Core (Wolfdale core, dual-core, 0.045 micron, 2 MB L2 cache)
80573J   Low-power Dual-core Xeon (Wolfdale core, 0.045 micron)
80573K   Dual-core Xeon (Wolfdale core, 0.045 micron)
80573Q   Mid-power Dual-core Xeon (Wolfdale core, 0.045 micron)
80574J   Low-power Quad-core Xeon (Harpertown core, 0.045 micron)
80574K   Quad-core Xeon (Harpertown core, 0.045 micron)
80576G   Core 2 Duo Mobile (Penryn core, 0.045 micron)
80576L   Low-power Core 2 Duo Mobile (Penryn core, 0.045 micron)
80576S   Power-optimized Core 2 Duo Mobile (Penryn core, 0.045 micron)
80576Z   Core 2 Extreme Mobile (Penryn core, 0.045 micron)
80577G   Core 2 Duo Mobile (Penryn core, 0.045 micron)
80577S   Power-optimized Core 2 Duo Mobile (Penryn core, 0.045 micron)
80577U   Ultra low power Core 2 Duo Mobile (Penryn core, 0.045 micron)
80580A   Core 2 Quad (Yorkfield core, quad core, 0.045 micron)
80580K   Quad-core Xeon (Yorkfield core, 0.045 micron)
80580P   Core 2 Quad (Yorkfield core, quad core, 0.045 micron)
80581G   Core 2 Quad Mobile (quad core, 0.045 micron)
80581Z   Core 2 Extreme Mobile (quad core, 0.045 micron)
80582J   Low-power six core Xeon MP (Dunnington core, 0.045 micron). The last parameter in part number is an L3 cache size.
80582K   Six core Xeon MP (Dunnington core, 0.045 micron). The last parameter in part number is an L3 cache size.
80582Q   Mid-power six core Xeon MP (Dunnington core, 0.045 micron). The last parameter in part number is an L3 cache size.
80583J   Low-power quad-core Xeon MP (Dunnington core, 0.045 micron). The last parameter in part number is an L3 cache size.
80583Q   Mid-power quad-core Xeon MP (Dunnington core, 0.045 micron). The last parameter in part number is an L3 cache size.
80585V   Ultra low power Celeron M (0.045 micron)
80585U   Ultra low power Core 2 Solo (0.045 micron)
80586G   Atom (single core, 0.045 micron)
80586R   Atom (single core, 0.045 micron)
80587R   Atom (dual core, 0.045 micron)
80588J   Low-power Xeon (single core, 0.045 micron)
 
          1. Package type
Blank   Cartridge.
Part numbers marked on OEM CPUs may have package type missing.
AC   RoHS-compliant lead-free halide-free FC-BGA8 package.
Atom processors have 437-ball FC-BGA package.
AD   RoHS-compliant lead-free halide-free FC-mPGA8 package.
Xeon processors have 604-pin package.
AT   RoHS-compliant lead-free halide-free FC-LGA8 package.
771-land FC-LGA for 2-way Xeon CPUs, 775-land FC-LGA for all others
AU   RoHS-compliant lead-free halide-free FC-BGA8 package.
Atom processors have 437-ball FC-BGA package.
AV   RoHS-compliant lead-free halide-free micro FC-BGA8 package.
Core 2 Duo Mobile CPUs have 479-ball or 956-ball micro-FCBGA package
AW   RoHS-compliant lead-free halide-free micro FC-PGA8 package.
Core 2 Duo Mobile CPUs have 478-pin package
DC   Slot 1 Cartridge. "DC" was used only for early Pentium II CPUs.
EC   RoHS-compliant lead-free micro FC-BGA8 package
Core 2 Duo Mobile has 479-ball package
EU   RoHS-compliant lead-free FC-LGA8 package
Xeon - 771-land FC-LGA for 2-way and 4-way Xeons, All others - 775-land FC-LGA
FF   RoHS-compliant lead-free micro FC-PGA8 package
Core 2 Duo Mobile has 478-pin package
FV   Plastic PGA
GJ   387-pin Staggered Plastic PGA
HH   RoHS-compliant FC-LGA6 package.
Xeon - 771-land FC-LGA6/mLGA, All others - 775-land FC-LGA6
JM   775-land FC-LGA4 package.
LE   RoHS-compliant micro FC-BGA2 / FC-BGA4 / FC-BGA6 package.
Celeron M, Pentium M, Core Solo, Core Duo and Core 2 Duo Mobile processors have 479-ball package
LF   RoHS-compliant micro FC-PGA6 package.
Core2 Duo mobile and Celeron M CPUs have 478-pin package.
NE   RoHS-compliant micro FC-PGA package with integrated heatsink.
Celeron D CPUs have 478-pin micro FC-PGA2 package. Itanium 2 has 611-pin FC-PGA4 package. Xeon has 604-pin package.
KB   387-pin staggered ceramic PGA
KC   Micro-BGA package (Mobile Celeron, Pentium II).
Slot 1 package (Pentium III)
KP   Micro-PGA package.
KW   Micro-FCBGA package.
KX   387-pin staggered ceramic PGA
RB   370-pin FC-PGA.
RH   478-pin Micro FC-PGA package.
RJ   Micro FC-BGA4 package.
For Celeron M, Pentium M and Mobile Pentium III-M it's a 479-ball micro FC-BGA.
RK   Micro FC-PGA package with integrated heatsink.
Celeron D, Mobile Pentium 4 and Pentium 4 have 478-pin package, Xeon has 604-pin FC-PGA2 on microPGA interposer, Celeron has 370-pin FC-PGA2.
RN   Micro-BGA package on microPGA interposer.
Pentium 4 has 423-pin OLGA/PPGA. Xeon MP has 603-pin FC-BGA/mPGA.
UM   Micro FC-BGA4 package
YA   OLGA on 611-pin PGA interposer
YD   423-pin OLGA/PPGA package (Pentium 4).
YF   603-pin OLGA/mPGA (Xeon MP)
YK   OLGA on 611-pin PGA interposer

Note to the table above:

It is possible to break the item "CPU family and Microprocessor core" into two pieces - 5-digit core technology and one-letter CPU class, but this results in much less accurate identification.

5-digit core technology code can be used to identify base core and manufacturing process. In some cases it's not possible to tell correct CPU core just knowing the 5-digit code. For instance, 80528 Pentium 4s and 80528 Xeons have different core names.

CPU class can be used to distinguish between desktop/mobile, and server/workstation/budget processors. Here is how the most common CPU classes can be decoded:

  • G - high-performance mobile processor (Mobile Pentium II/III/M, Core 2 Duo mobile)
  • K - server-class processor (Xeon)
  • N - budget mobile processor (Mobile Celeron, Celeron M)
  • P - workstation-class processor (Pentium, Core 2 Duo)
  • R - budget processor (Celeron)
Unfortunately, some Intel processors do not conform to these conventions. For instance, mobile Pentium II processors should have CPU class "G", but they actually have class "K" in their part number.

  Modern Boxed CPUs identification  
Related links: Celeron | Celeron_D | Pentium II | Pentium III | Pentium_4 | Pentium_D | Core_2 | Itanium | Timna
1 2 3 4 5  
BX 80532 C 2000 B  
 
5. Processor features or L2 cache size
128    128 KB L2 cache
B   0.13 micron, 128 KB L2 cache
C   0.09 micron, 256 KB L2 cache
CN   0.09 micron, 256 KB L2 cache, EM64T technology
D   0.13 micron, 512 KB L2 cache
E   0.09 micron, 1 MB L2 cache
EJ   0.09 micron, 1 MB L2 cache, Execute disable bit feature
EK   0.09 micron, 1 MB L2 cache, EM64T technology, includes ATX thermal module
EKT   0.09 micron, 1 MB L2 cache, EM64T technology, includes BTX thermal module
F   0.09 micron: 2 MB L2 cache, EM64T technology, includes ATX thermal module
0.13 micron: 512 KB L2 cache, 2 MB level 3 cache
FN   0.09 micron: 2 MB L2 cache, EM64T technology, includes ATX thermal module
FS   0.13 micron, 2 MB L2 cache, LGA775 package
FT   0.09 micron, 2 MB L2 cache, EM64T technology, includes BTX thermal module
 
  4. Frequency (MHz)
 
    3. Bus speed
C   400 MHz (effective), 100 MHz (actual)
E   533 MHz (effective), 133 MHz (actual)
G   800 MHz (effective), 200 MHz (actual)
H   1066 MHz (effective), 266 MHz (actual)
 
      2. CPU family and Microprocessor core
80532P   Desktop Pentium (Northwood core, 0.13 micron)
80532R   Celeron (Northwood core, 0.13 micron)
80546P   Desktop Pentium 4 (Prescott core, 0.09 micron, micro FC-PGA package, socket 478)
80546R   Celeron D (Prescott core, 0.09 micron, micro FC-PGA package, socket 478)
80547P   Desktop Pentium 4 (Prescott core, 0.09 micron, FC-LGA package, socket 775)
80547R   Celeron D (Prescott core, 0.09 micron, FC-LGA package, socket 775)
80551P   Pentium D (Smithfield core, 0.09 micron)
 
  1. Boxed processor

Last modified: 24 Nov 2008
  Terms and Conditions · Contact Us (c) Copyright 2003 - 2008 Gennadiy Shvets