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Intel Core 2 Duo E8400 vs Core 2 Quad Q9500

Mini Review

Intel Core 2 Duo E8400 advantages

  • Our estimates show that single-threaded performance of this microprocessor is better.
  • The E8400 is 32% more energy efficient than the Intel Q9500 CPU.

Intel Core 2 Quad Q9500 advantages

  • The Intel Core 2 Quad Q9500 has more processing cores than the Intel E8400. Large number of cores helps this microprocessor to handle multiple processes or heavily multi-threaded tasks.
  • Based on our estimates, the Intel Core 2 Quad Q9500 has 54% higher performance in multi-threaded programs.

E8400 vs Q9500 estimated performance

The charts below illustrate performance of Core 2 Duo E8400 and Core 2 Quad Q9500 processors. Performance numbers for Core 2 Duo E8400 were determined based on a variety of benchmarks. Results for Core 2 Quad Q9500 were derived from benchmark results of other CPUs with identical core and microarchitecture. As a note, the estimate has greater error of margin than results obtained using real-world tests. Also, this is an averaged performance, and the difference in individual benchmarks may be worse or better than what you see in the charts below.
Single-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1.13
 
1
 
 
Higher is better
Multi-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1
 
1.54
 
 
Higher is better

  - Intel Core 2 Duo E8400       - Intel Core 2 Quad Q9500

E8400 vs Q9500 specifications comparison

The graphs below compare the most important Core 2 Duo E8400 and Intel Q9500 characteristics. These features, as well as an IPC (instructions per cycle) number, determine how well a microprocessor performs.

The number of cores / threads
5
4
3
2
1
0
 
 
2
 
4
 
 
Higher is better
Operating frequency
4
3.2
2.4
1.6
0.8
0
 
 
3GHz
 
2.83GHz
 
 
Higher is better
Thermal Design Power
110
88
66
44
22
0
 
 
65W
 
95W
 
 
Lower is better
 

  - Intel Core 2 Duo E8400       - Intel Core 2 Quad Q9500

Detailed side by side comparison of Core 2 Duo E8400 vs Intel Q9500 specs can be found in the "Specifications" tab.


Pros and Cons summary

Core 2 Duo E8400 Core 2 Quad Q9500
General recommendations:
Somewhat faster in single-threaded tasks,
Lower power
  General recommendations:
Much faster in multi-threaded tasks,
Packs more CPU cores,
Supports more simultaneous threads

Drawbacks:

Performs much worse in multi-threaded programs,
Not as many CPU cores,
Handles fewer threads
 

Drawbacks:

Worse performance in single-threaded applications,
Somewhat higher power consumption

Similar processors

Core 2 Duo E8400 Core 2 Quad Q9500
 

Similar microprocessors use the same socket and architecture as E8400 and Intel Core 2 Quad Q9500, however their performance and other characteristics are a bit different.

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More comparisons

Compare Intel Core 2 Duo E8400 with...

Other Core 2 Quad CPU:

Any CPU:


Compare Intel Core 2 Quad Q9500 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 E8400 and Intel Core 2 Quad Q9500 pages for more complete specifications of both microprocessors.

 Intel Core 2 Duo E8400Intel Core 2 Quad Q9500
Market segmentDesktop
ManufacturerIntel
FamilyCore 2 DuoCore 2 Quad
Basic details
Model numberE8400Q9500
CPU part numberAT80570PJ0806M
EU80570PJ0806M
AT80580PJ0736ML
AT80580PJ073JL
Box part numberBX80570E8400
BXC80570E8400
BX80570E8400A
 
Introduction dateJanuary 7, 2008January 17, 2010
 
CPU features
Core nameWolfdaleYorkfield
MicroarchitectureCore
Technology (micron)0.045
Data width (bits)64
SocketSocket 775
Frequency (MHz)30002833
Bus speed (MHz)1333
Clock Multiplier98.5
L1 cache64 KB (code) / 64 KB (data)128 KB (code) / 128 KB (data)
L2 cache (KB)6144
Max temperature (°C)72.4 
TDP (Watt)6595
Max power dissipation (Watt)100.31 
Core voltage (V)0.85 - 1.3625 
Cores24
Threads24
Multiprocessing1
 
Instruction set extensions
AMD64 / EM64T 64-bit technology+
MMX+
SSE+
SSE2+
SSE3+
SSE4.1+
SSSE3 / Supplemental SSE3+
 
Supported technologies
PowerNow! / Enhanced SpeedStep+
Trusted Execution+-
Virtualization+
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 E8400" or "Intel Core 2 Quad Q9500" parts please click on the links in the table header.

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