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Intel Pentium 4 1.4 GHz - RK80531PC017G0K / BX80531NK140G

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New 478-pin micro-PGA package for desktop Pentium 4 microprocessors was introduced in August 2001 together with 1.9 GHz and 2 GHz versions of Pentium 4s. Almost full line of Willamette CPUs, starting from this Pentium 4 1.4 GHz, was also converted to use the brand-new 478-pin package. This package, compatible with socket 478 motherboards, had 35% smaller width and height, and 57% smaller package area than original Pentium 4 CPUs. This reduction in size was achieved by cutting distance between pins in half. The smaller package was the major change in socket 478 Willamette processors. There were also minor differences between socket 423 and 478 versions of Pentium 4 in electrical characteristics, maximum operating temperature and Thermal Design Power. All major CPU features, such as micro-architecture, size of cache memory, support for SIMD instructions, etc, stayed the same on socket 478 Willamette processors.

Socket 478 Willamettes do not have any performance advantage over socket 423 CPUs, but they provide much better upgrade path. In most cases, this 1.4 GHz CPU can be upgraded to 2.6 GHz Pentium 4 with 400 MHz FSB, or, even to faster, but significantly more rare, 2.8 GHz and 3 GHz Pentium 4s with 400 MHz FSB. Socket 423 CPUs can be upgraded to Pentium 4 2 GHz. Although socket 423 motherboards can be used with faster socket 478 processors, you will need to buy a special socket 423-to-478 adapter for that, and the cost of the adapter is usually higher than the cost of the Pentium 4 2.6 GHz, even years after Pentium 4 family became obsolete. Other upgrade options for this socket 478 Pentium 4 CPU depend primarily on the motherboard. If the motherboard supports 533 MHz FSB then you should be able to upgrade to Pentium 4 3.06 GHz with Northwood core. If, by any chance, the motherboard supports 800 MHz FSB, then you may be able to upgrade to Pentium 4 3.4 GHz, or, if the Prescott core is supported by your board, to Pentium 3.8 GHz. For more details on upgrade options please click on the Socket 478 link on this page.

Intel Pentium 4 1.4 GHz specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyIntel Pentium 4
CPU part numbers
  • RK80531PC017G0K is an OEM/tray microprocessor
  • BX80531NK140G is a boxed microprocessor
Frequency  ? 1400 MHz
Bus speed  ? 400 MHz
Clock multiplier  ? 14
Package478-pin Flip-Chip Pin Grid Array (FC-PGA2)
SocketSocket 478 / mPGA478B
S-spec numbers
  ES/QS processors Production processors
Part number QCI2 QES6 SL59U SL5N7 SL5TG SL5UE
BX80531NK140G  ++++
RK80531PC017G0K+++ + 
Architecture / Microarchitecture
Processor core  ? Willamette
Core steppings  ? C1 (QCI2, QES6, SL59U, SL5N7)
F12 (SL5TG, SL5UE)
Manufacturing process0.18 micron
42 million transistors
Data width32 bit
The number of cores1
The number of threads1
Floating Point UnitIntegrated
Level 1 cache size  ? 8 KB
Level 2 cache size  ? 256 KB 8-way associative full-speed on-die cache
  • MMX instructions
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
Low power features
  • System Management Mode
  • Auto-HALT mode  ? 
  • Stop Grant mode  ? 
  • Sleep mode  ? 
  • Deep Sleep mode  ? 
Integrated peripherals / components
Integrated graphicsNone
Electrical / Thermal parameters
V core  ? 1.75V
Minimum/Maximum operating temperature  ? 5°C - 72°C
Minimum/Maximum power dissipation  ? 21.2 Watt (Stop Grant mode) / 69.1 Watt
Thermal Design Power  ? 55.3 Watt
Notes on Intel Pentium 4 1.4 GHz
  • Bus frequency is 100 MHz. Because the processor uses Quad Data Rate bus the effective bus speed is 400 MHz.

Detailed side-by-side comparison

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Q: I have an Intel Pentium 4 1.4 GHz processor. Can I upgrade it?
A: Probably yes. CPU compatibility is determined by your motherboard. Please see website for CPU support list for your board.

Pentium 4 1.4 GHz Overclocking

Sorry, overclocking information is not available at this time.

CPU ID information for the Pentium 4 1.4 GHz

Search or browse all public submissions in our CPUID database.

Use our CPU identification tool to check features of your CPU.

NOTE: The CPU ID information below was taken from one CPU and may include features that are not present in all different steppings of the Intel Pentium 4 1400 MHz CPU.

CPU Family:Pentium 4
Processor Number:1400 MHz
Frequency:1395 MHz
Part number:
S-Spec Number:SL59U
Submitted by:Neon
General information
Processor name (BIOS): Intel(R) Pentium(R) 4 CPU 1400MHz
Logical processors:1
Processor type:Original OEM Processor
CPUID signature:F0A
Family:15 (0Fh)
Model: 0 (00h)
Stepping:10 (0Ah)
TLB/Cache details:Data TLB: 4-KB or 4-MB pages, fully associative, 64 entries
Instruction TLB: 4-KB, 2-MB or 4-MB pages, fully associative, 64 entries
No 2nd-level cache or, if processor contains a valid 2nd-level cache, no 3rd-level cache

Cache: L1 data L1 instruction L2
Size: 8 KB 12K uops 256 KB
Associativity: 4-way set
8-way set
8-way set
Line size: 64 bytes   64 bytes
Comments: sectored cache   sectored cache
Instruction set extensionsAdditional instructions
Major featuresOther features
On-chip Floating Point Unit 36-bit page-size extensions
  Advanced programmable interrupt controller
  Debug store
  Debugging extensions
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Model-specific registers
  Page attribute table
  Page global extension
  Page-size extensions (4MB pages)
  Physical address extensions
  Thermal monitor
  Thermal monitor and software controlled clock facilities
  Time stamp counter
  Virtual 8086-mode enhancements

CPUs, related to Intel Pentium 4 1.4 GHz (RK80531PC017G0K)

Model Frequency L2
TDP Features  
Intel Desktop Pentium 4 Willamette family, Socket 478
   Pentium 4 1.4 GHz (RK80531PC017G0K)1.4 GHz256 KB 55.3W 
   Pentium 4 1.5 GHz (RK80531PC021G0K)1.5 GHz256 KB 57.9W>
   Pentium 4 1.6 GHz (RK80531PC025G0K)1.6 GHz256 KB 60.8W>
   Pentium 4 1.7 GHz (RK80531PC029G0K)1.7 GHz256 KB 63.5W>
   Pentium 4 1.8 GHz (RK80531PC033G0K)1.8 GHz256 KB 66.1W>
   Pentium 4 1.9 GHz (RK80531PC037G0K)1.9 GHz256 KB 72.8W>
   Pentium 4 2 GHz (RK80531PC041G0K)2 GHz256 KB 75.3W>
Intel Desktop Pentium 4 Willamette family, Netburst micro-architecture, Other sockets
   Pentium 4 1.4 GHz (80528PC017G0K)1.4 GHz256 KB 54.7W>
   Pentium 4 1.4 GHz (80528PC1.4G0K)1.4 GHz256 KB  >
   Pentium 4 1.5 GHz (80528PC021G0K)1.5 GHz256 KB 57.8W>
   Pentium 4 1.6 GHz (RN80528PC025G0K)1.6 GHz256 KB 61W>
   Pentium 4 1.7 GHz (RN80528PC029G0K)1.7 GHz256 KB 64W>
   Pentium 4 1.8 GHz (RN80528PC033G0K)1.8 GHz256 KB 66.7W>
   Pentium 4 1.9 GHz (RN80528PC037G0K)1.9 GHz256 KB 69.2W>
   Pentium 4 2 GHz (RN80528PC041G0K)2 GHz256 KB 71.8W>
Other families, Netburst micro-architecture, Socket 478
   Celeron 2.7 GHz (RK80532RC068128)2.7 GHz128 KB 66.8W>
   Celeron 2.8 GHz (RK80532RC072128)2.8 GHz128 KB 68.4W>
   Celeron D 3453.06 GHz256 KB 73WSSE3>
   Celeron D 3503.2 GHz256 KB 73WSSE3>
   Pentium 4 EE 3.2 GHz (RK80532PG0882M)3.2 GHz512 KB2 MB92.1WHT>
   Pentium 4 3.2 GHz (RK80546PG0881M)3.2 GHz1 MB 103WSSE3, HT>
   Pentium 4 3.4 GHz (RK80532PG096512)3.4 GHz512 KB 89WHT>
   Pentium 4 EE 3.4 GHz (RK80532PG0962M)3.4 GHz512 KB2 MB102.9WHT>
   Pentium 4 3.4 GHz (RK80546PG0961M)3.4 GHz1 MB 103WSSE3, HT>
 • Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)
 • Background color of specs and features indicate whether they are better or worse than similar spec/feature of the Pentium 4 1.4 GHz (RK80531PC017G0K)
 • Click on the >  icon to compare any CPU in the table with the Intel Pentium 4 1.4 GHz (RK80531PC017G0K) (Javascript required).
 • List of related CPUs is not complete.
 • Features abbreviations:
SSE3 - SSE3 instructions
HT - Hyper-Threading

Pictures (1)

2010-06-10 19:00:10
Posted by: Neon

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