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Intel Core 2 Duo E4400 HH80557PG0412M (BX80557E4400)

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Intel Core 2 Duo E4400 specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyIntel Core 2 Duo
Model number  ? E4400
CPU part numbers
  • HH80557PG0412M is an OEM/tray microprocessor
  • BX80557E4400 is a boxed microprocessor
Frequency  ? 2000 MHz
Bus speed  ? 800 MHz
Clock multiplier  ? 10
Package775-land Flip-Chip Land Grid Array (FC-LGA6)
1.48" x 1.48" (3.75 cm x 3.75 cm)
SocketSocket 775 / LGA775 / T
Introduction dateApr 22, 2007
S-spec numbers
  ES/QS processors Production processors
BX80557E4400  + +
Architecture / Microarchitecture
Processor core  ? Allendale
Core steppings  ? L2 (SLA3F)
Manufacturing process0.065 micron
Data width64 bit
The number of cores2
The number of threads2
Floating Point UnitIntegrated
Level 1 cache size  ? 2 x 32 KB 8-way set associative instruction caches
2 x 32 KB 8-way set associative data caches
Level 2 cache size  ? shared 2 MB 8-way set associative cache
Cache latency3 (L1 cache)
14 (L2 cache)
  • MMX instructions
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • SSE3 / Streaming SIMD Extensions 3
  • SSSE3 / Supplemental Streaming SIMD Extensions 3
  • EM64T / Extended Memory 64 technology / Intel 64  ? 
  • NX / XD / Execute disable bit  ? 
Low power features
  • Enhanced SpeedStep technology  ? 
  • Stop Grant state  ? 
  • Halt state
  • Extended Halt state
Integrated peripherals / components
Integrated graphicsNone
Electrical / Thermal parameters
V core  ? 0.85V - 1.5V
Minimum/Maximum operating temperature  ? 5°C - 61.4°C
Minimum/Maximum power dissipation  ? 8 Watt (Extended Halt mode) / 104.63 Watt
Thermal Design Power  ? 65 Watt
Notes on Intel Core 2 Duo E4400
  • Binary compatible with 32-bit x86 software
  • Bus frequency is 200 MHz. Because the processor uses Quad Data Rate bus the effective bus speed is 800 MHz

Detailed side-by-side comparison

For detailed comparision of the Intel E4400 and any other other chip from our CPU database type in a chip name and/or its partial specs:

You can specify any of the following: manufacturer name, family name, model number, part number, core name, socket name, operating frequency, bus speed, and the last level cache. Here are examples of searches: E4400, HH80557PG0412M, Intel Core 2 Duo 2GHz, Allendale Socket 775

Historical price chart

The chart below shows official prices of Intel Core 2 Duo E4300, E4400 and E4500 processors:

Historical official prices of Core 2 Duo E4300, E4400 and E4500 processors


Q: Is it possible to upgrade my Intel E4400 processor?
A: Probably yes. CPU compatibility is determined by your motherboard. Please see website for CPU support list for your board.

Core 2 Duo E4400 Overclocking

Sorry, overclocking information is not available at this time.

CPU ID information for the Core 2 Duo E4400

Our CPUID database contains 5 records for this microprocessor. See all submitted records.

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 Core 2 Duo E4400 CPU.

CPU Family:Core 2 Duo
Processor Number:E4400
Frequency:2000 MHz
Part number:
S-Spec Number:
Submitted by:
General information
Processor name (BIOS):Intel(R) Core(TM)2 CPU 4400 @ 2.00GHz
Logical processors:2
Processor type:Original OEM Processor
CPUID signature:6F2
Family: 6 (06h)
Model:15 (0Fh)
Stepping: 2 (02h)
TLB/Cache details:64-byte Prefetching
Data TLB: 4-KB Pages, 4-way set associative, 256 entries
Data TLB: 4-MB Pages, 4-way set associative, 32 entries
Instruction TLB: 2-MB pages, 4-way, 8 entries or 4M pages, 4-way, 4 entries
Instruction TLB: 4-KB Pages, 4-way set associative, 128 entries
L1 Data TLB: 4-KB pages, 4-way set associative, 16 entries
L1 Data TLB: 4-MB pages, 4-way set associative, 16 entries

Cache: L1 data L1 instruction L2
Size: 2 x 32 KB 2 x 32 KB 2 MB
Associativity: 8-way set
8-way set
8-way set
Line size: 64 bytes 64 bytes 64 bytes
Comments: Direct-mapped Direct-mapped Non-inclusive
Shared between all cores
Instruction set extensionsAdditional instructions
Major featuresOther features
On-chip Floating Point Unit 36-bit page-size extensions
64-bit / Intel 64 64-bit debug store
NX bit/XD-bit Advanced programmable interrupt controller
Enhanced SpeedStep CPL qualified debug store
  Debug store
  Debugging extensions
  Digital Thermal Sensor capability
  LAHF/SAHF support in 64-bit mode
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Model-specific registers
  Page attribute table
  Page global extension
  Page-size extensions (4MB pages)
  Pending break enable
  Perfmon and Debug capability
  Physical address extensions
  Thermal monitor
  Thermal monitor 2
  Thermal monitor and software controlled clock facilities
  Time stamp counter
  Virtual 8086-mode enhancements
  xTPR Update Control

CPUs, related to Intel Core 2 Duo E4400

Model Cores /
Frequency L2
TDP Features  
Intel Core 2 Duo family, Socket 775
   Core 2 Duo E44002 / 22 GHz2 MB65WESS 
   Core 2 Duo E73002 / 22.66 GHz3 MB65WESS>
   Core 2 Duo E67002 / 22.66 GHz4 MB65WVT, ESS>
   Core 2 Duo E67502 / 22.66 GHz4 MB65WVT, TXT, ESS>
   Core 2 Duo E74002 / 22.8 GHz3 MB65WVT, ESS>
   Core 2 Duo E81902 / 22.66 GHz6 MB65WESS>
   Core 2 Duo E82002 / 22.66 GHz6 MB65WVT, TXT, ESS>
   Core 2 Duo E75002 / 22.93 GHz3 MB65WVT, ESS>
   Core 2 Duo E82902 / 22.83 GHz6 MB65WESS>
   Core 2 Duo E76002 / 23.06 GHz3 MB65WVT, ESS>
   Core 2 Duo E83002 / 22.83 GHz6 MB65WVT, TXT, ESS>
   Core 2 Duo E68502 / 23 GHz4 MB65WVT, TXT, ESS>
   Core 2 Duo E84002 / 23 GHz6 MB65WVT, TXT, ESS>
   Core 2 Duo E85002 / 23.16 GHz6 MB65WVT, TXT, ESS>
   Core 2 Duo E86002 / 23.33 GHz6 MB65WVT, TXT, ESS>
Intel Core 2 Duo family, Core micro-architecture, Other sockets
   Core 2 Duo E63052 / 21.86 GHz2 MB65WVT, ESS>
   Core 2 Duo E64052 / 22.13 GHz2 MB65WVT, ESS>
Other families, Core micro-architecture, Socket 775
   Celeron 4401 / 12 GHz512 KB35WESS>
   Celeron 4501 / 12.2 GHz512 KB35WESS>
   Celeron E35002 / 22.7 GHz1 MB65WVT, ESS>
   Pentium E68002 / 23.33 GHz2 MB65WVT, ESS>
   Core 2 Extreme QX96504 / 43 GHz12 MB130WVT, ESS>
   Core 2 Quad Q96504 / 43 GHz12 MB95WVT, TXT, ESS>
   Core 2 Extreme QX97704 / 43.2 GHz12 MB136WVT, ESS>
 • 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 Core 2 Duo E4400
 • Click on the >  icon to compare any CPU in the table with the Intel Core 2 Duo E4400 (Javascript required).
 • List of related CPUs is not complete.
 • Features abbreviations:
VT - Virtualization
TXT - Trusted Execution
ESS - PowerNow! / Enhanced SpeedStep

Pictures (1)

2014-05-30 13:59:51
Posted by: Eduardo Ranier

Comments (2)

You're welcome to post suggestions, corrections, your own personal Intel Core 2 Duo E4400 review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.


2008-04-17 13:09:58
Posted by: ska

easily overclocks to 3 GHz with no overvolt (10 x 300 MHz or 8 x 375 MHz if motherboard allows).

A monster overclocker!

2010-07-12 12:28:55
Posted by: RAFUi Andrei

I managed to push 3.0ghz at stock fan/vcore and other voltages,but the temps are too high,so i keep it at 2.8ghz with max load temps at 60max,with Stock HSF

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