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Intel Core 2 Duo E4400 vs Pentium D 945

Mini Review

Intel Core 2 Duo E4400 advantages

  • It is estimated that the Intel Core 2 Duo E4400 is 24% faster when running single-threaded tasks.
  • According to our estimates, multi-threaded performance of the CPU is higher.
  • SSSE3 instructions are enabled on this processor.
  • Power consumption of the Intel Core 2 Duo E4400 is lower.

Intel Pentium D 945 advantages

  • None

E4400 vs 945 estimated performance

The charts in the section below demonstrate performance of Core 2 Duo E4400 and Pentium D 945 processors. Results for Pentium D 945 were determined based on a number of tests. Performance numbers for Core 2 Duo E4400 were approximated from benchmark results of other microprocessors with similar core and microarchitecture. As a note, the estimate has greater error of margin than results obtained using real-world benchmarks. Also, this is an averaged performance, and the shown results may differ from results, that you may receive in individual tests.
Single-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1.24
 
1
 
 
Higher is better
Multi-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1.21
 
1
 
 
Higher is better

  - Intel Core 2 Duo E4400       - Intel Pentium D 945

E4400 vs 945 specifications comparison

The graphs below show the difference between Intel Core 2 Duo E4400 and Intel 945 most important features. These characteristics, together with an IPC (instructions per cycle) number, determine how well a microprocessor performs.

The number of cores / threads
3
2.4
1.8
1.2
0.6
0
 
 
2
 
2
 
 
Higher is better
Operating frequency
4
3.2
2.4
1.6
0.8
0
 
 
2GHz
 
3.4GHz
 
 
Higher is better
Thermal Design Power
110
88
66
44
22
0
 
 
65W
 
95W
 
 
Lower is better
 

  - Intel Core 2 Duo E4400       - Intel Pentium D 945

Detailed side by side comparison of Intel E4400 vs Intel 945 specs can be found in the "Specifications" tab.


Pros and Cons summary

Core 2 Duo E4400 Pentium D 945
General recommendations:
Performs somewhat better in single- and multi-threaded programs,
Needs less power
  General recommendations:
None

Drawbacks:

None
 

Drawbacks:

Requires somewhat more power

Similar processors

Core 2 Duo E4400 Pentium D 945
 

Similar processors utilize the same core and fit the same socket as Core 2 Duo E4400 and Intel Pentium D 945.

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More comparisons

Compare Intel Core 2 Duo E4400 with...

Other Pentium D CPU:

Any CPU:


Compare Intel Pentium D 945 with...

Other Core 2 Duo CPU:

Any CPU:


Note: To see differences with any CPU, type in any combination of the following into the "Any CPU" field: manufacturer name, full or partial family name, model number, part number, core name, socket name, operating frequency, bus speed (must have FSB suffix), and the last level cache. Here are some valid searches:

  i5-3570K
  Intel Celeron 2 GHz
  Core
  Pentium 4 800FSB
  AMD 3.3GHz 8MB

Specifications

Please visit Intel Core 2 Duo E4400 and Intel Pentium D 945 pages for more complete specifications of both microprocessors.

 Intel Core 2 Duo E4400Intel Pentium D 945
Market segmentDesktop
ManufacturerIntel
FamilyCore 2 DuoPentium D
Basic details
Model numberE4400945
CPU part numberHH80557PG0412MHH80553PG0964MN
Box part numberBX80557E4400BX80553945
BX80553945R
Introduction dateApril 22, 2007 
 
CPU features
Core nameAllendalePresler
MicroarchitectureCoreNetburst
Technology (micron)0.065
Data width (bits)64
SocketSocket 775
Frequency (MHz)20003400
Bus speed (MHz)800
Clock Multiplier1017
L1 cache64 KB (code) / 64 KB (data)32 KB (data)
L2 cache (KB)20484096
Max temperature (°C)61.462.3
TDP (Watt)6595
Max power dissipation (Watt)104.63118.75
Core voltage (V)0.85 - 1.51.2 - 1.3375
Cores2
Threads2
Multiprocessing1 
 
Instruction set extensions
AMD64 / EM64T 64-bit technology+
MMX+
SSE+
SSE2+
SSE3+
SSSE3 / Supplemental SSE3+-
 
Supported technologies
PowerNow! / Enhanced SpeedStep+
Virus Protection / Execute Disable bit+
 
Integrated Graphics
GPU TypeNone
 
Integrated Memory Controller(s)
The number of controllers0
Notes:

Rows with different specifications or features are highlighted.

For detailed specifications of "Intel Core 2 Duo E4400" or "Intel Pentium D 945" parts please click on the links in the table header.

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