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Intel Core 2 Duo E8400 vs Core 2 Quad Q6600

Mini Review

Intel Core 2 Duo E8400 advantages

  • The Intel Core 2 Duo E8400 is 35% faster when running single-threaded programs.
  • SSE4.1 instructions are enabled on this CPU.
  • Power consumption of the processor is better.

Intel Core 2 Quad Q6600 advantages

  • In multi-threaded tasks, the microprocessor has 31% higher performance.
  • In memory-intensive applications, the Q6600 CPU is 17% faster.

E8400 vs Q6600 performance comparison

The charts in the section below demonstrate performance of Core 2 Duo E8400 and Core 2 Quad Q6600 microprocessors in several different kinds of programs. To calculate displayed numbers we averaged results for a few benchmarks for each specific task type. As a result, performance in individual benchmarks may be lower or higher than what you see in the charts here. We also averaged the numbers for application type specific benchmarks and all-around performance benchmarks, and presented them in the 'Overall performance' chart.
Single-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1.35
 
1
 
 
Higher is better
Multi-threaded performance
2
1.6
1.2
0.8
0.4
0
 
 
1
 
1.31
 
 
Higher is better
Memory-intensive applications
2
1.6
1.2
0.8
0.4
0
 
 
1
 
1.17
 
 
Higher is better
Overall performance
2
1.6
1.2
0.8
0.4
0
 
 
1
 
1.01
 
 
Higher is better

  - Intel Core 2 Duo E8400       - Intel Core 2 Quad Q6600

Full list of benchmarks, that show difference in performance between Core 2 Duo E8400 and Intel Q6600 in various types of applications, can be seen in the "Benchmarks" tab.


E8400 vs Q6600 power consumption comparison

Thermal Design Power
200
160
120
80
40
0
 
 
65W
 
105W
 
 
Lower is better
 

Detailed side by side comparison of Core 2 Duo E8400 vs Core 2 Quad Q6600 specs can be found in the "Specifications" tab. Even more detailed comparison of internal features of both processors is located in the "CPUIDs" tab.


Pros and Cons summary

Core 2 Duo E8400 Core 2 Quad Q6600
General recommendations:
Performs somewhat faster in single-threaded applications,
Supports SSE4.1 instructions,
Lower power
  General recommendations:
Slightly better performance in all program types

Drawbacks:

A bit worse overall performance
 

Drawbacks:

Worse performance in single-threaded tasks,
Does not support some instructions,
Needs much more power

Similar processors

Core 2 Duo E8400 Core 2 Quad Q6600
 

Similar CPUs use the same socket and architecture as E8400 and Core 2 Quad Q6600, however their performance and other characteristics are a bit different.

Jump to:
  • Benchmarks
  • CPUIDs
  • Comments
 

Popular comparisons:

More comparisons

Compare Intel Core 2 Duo E8400 with...

Other Core 2 Quad CPU:

Any CPU:


Compare Intel Core 2 Quad Q6600 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 Q6600 pages for more complete specifications of both microprocessors.

 Intel Core 2 Duo E8400Intel Core 2 Quad Q6600
Market segmentDesktop
ManufacturerIntel
FamilyCore 2 DuoCore 2 Quad
Basic details
Model numberE8400Q6600
CPU part numberAT80570PJ0806M
EU80570PJ0806M
HH80562PH0568M
Box part numberBX80570E8400
BXC80570E8400
BX80570E8400A
BX80562Q6600
Introduction dateJanuary 7, 2008January 8, 2007
 
CPU features
Core nameWolfdaleKentsfield
MicroarchitectureCore
Technology (micron)0.0450.065
Data width (bits)64
SocketSocket 775
Frequency (MHz)30002400
Bus speed (MHz)13331066
Clock Multiplier9
L1 cache64 KB (code) / 64 KB (data)128 KB (code) / 128 KB (data)
L2 cache (KB)61448192
Max temperature (°C)72.460.3
TDP (Watt)65105
Max power dissipation (Watt)100.31155.25
Core voltage (V)0.85 - 1.36250.85 - 1.5
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 Q6600" parts please click on the links in the table header.

Benchmarks

System setup

Intel Core 2 Duo E8400 and Core 2 Quad Q6600 processors were tested using different system components, that are identified by MB, RAM and VID columns in the tables below. The numbers in each of these columns correspond to one of motherboards (MB), memory configurations (RAM) or graphics adapters (VID), listed below:

MB - Motherboard(s):
1. ASROCK 4CORE1600TWINS-P35
2. INTEL DP965LT

RAM - Memory:
1. 2 GB DUAL-CHANNEL CORSAIR CM3X1024-1333C9 DDR3
2. 2GB DUAL-CHANNEL CORSAIR CM2X1024-6400C4

VID - Video card(s):
1. POWERCOLOR 24PRO256M DDR2 (ATI RADEON HD2400)

All tests were performed at default frequency and voltage, using manufacturer's stock fan/heatsink. None of the components were overclocked. Motherboard BIOS options were left at default settings.

The results of all benchmarks are broken into four categories: multi-threaded, single-threaded, memory intensive and graphics / gaming.


Core 2 Duo E8400 vs Core 2 Quad Q6600 single-threaded benchmarks

Single-threaded benchmarks run on a single CPU core, and do not depend on such features as the number of cores, or Hyper-Threading technology. Additionally, they do not utilize on-chip caches, dedicated to other cores.

     

    Intel Core 2 Duo E8400           Intel Core 2 Quad Q6600

CINEBENCH R10 CPU score (1 core) benchmark

Measures performance of a single-core rendering of a photo-realistic 3D image using CINEMA 4D software engine.
Longer is better <MBRAMVID
100%111
74.6%111
74.5%221

Super PI (1M) benchmark

Measures time, required to calculate the first 1 million digits after the decimal point in the number Pi.
Longer is better <MBRAMVID
100%111
73.6%111
73.2%221


Core 2 Duo E8400 vs Core 2 Quad Q6600 multi-threaded benchmarks

Multi-threaded benchmarks utilize all CPU cores and other on-chip resources (on-chip caches, internal buffers, etc). Intel's Hyper-Threading feature also helps to improve multi-threading performance.

     

    Intel Core 2 Duo E8400           Intel Core 2 Quad Q6600

CINEBENCH R10 CPU score benchmark

Measures performance of multi-core rendering of a photo-realistic 3D image using CINEMA 4D software engine.
Longer is better <MBRAMVID
100%221
99.9%111
73.2%111

CINEBENCH R10 render time (seconds) benchmark

Measures time taken to render a photo-realistic 3D image using CINEMA 4D software engine.
Longer is better <MBRAMVID
100%221
99.9%111
73.2%111

Euler3D benchmark

Longer is better <MBRAMVID
100%111
98.4%221
87.6%111

Sandra Dhrystone (MIPS) benchmark

Runs Dhrystone test on all cores, and reports estimated integer performance in MIPS (Millions of Instructions Per Second).
Longer is better <MBRAMVID
100%111
99.9%221
62.0%111

Sandra MultiMedia Floating Point (it/s) benchmark

Longer is better <MBRAMVID
100%111
99.7%221
62.8%111

    Intel Core 2 Duo E8400           Intel Core 2 Quad Q6600

Sandra MultiMedia Integer (it/s) benchmark

Longer is better <MBRAMVID
100%111
99.9%221
61.9%111

Sandra Whetstone (MFLOPS) benchmark

Runs Whetstone test on all cores, and reports estimated floating-point performance in MFLOPS (Millions of Floating-Point Operations Per Second).
Longer is better <MBRAMVID
100%111
99.5%221
66.0%111

Sandra Whetstone SSE2 (MFLOPS) benchmark

Runs SSE2-enabled Whetstone test on all cores, and reports estimated floating-point performance in MFLOPS (Millions of Floating-Point Operations Per Second).
Longer is better <MBRAMVID
100%221
99.8%111
69.9%111

wPrime v1.55 (32M) benchmark

wPrime benchmark measures time taken to calculate square roots of numbers from 1 to 33554431.
Longer is better <MBRAMVID
100%111
100%221
66.7%111


Core 2 Duo E8400 vs Core 2 Quad Q6600 graphics benchmarks

Graphics benchmarks depend on the type of integrated or discrete graphics adapter, and to less extent on the processor performance. Because these benchmarks are synthetic, they may not truly represent gaming performance. However, they still can be used to estimate whether one processor will perform faster or slower than another CPU in games and other 3D tasks.

     

    Intel Core 2 Duo E8400           Intel Core 2 Quad Q6600

3DMark2001 score benchmark

Runs a series of game simulations and feature tests to measure graphics and 3D game performance of discrete and integrated GPUs. It utilizes a single CPU core, and it is compatible with DirectX 8 and later APIs.
Longer is better <MBRAMVID
100%111
98.0%111
97.6%221

CINEBENCH R10 OpenGL score benchmark

Longer is better <MBRAMVID
100%111
95.6%221
94.4%111


Core 2 Duo E8400 vs Core 2 Quad Q6600 memory performance

Memory-intensive tests or programs move large amounts of data to/from memory, and they depend more on memory throughput and the size of on-chip caches, rather than on CPU integer/FP/SIMD performance.

     

    Intel Core 2 Duo E8400           Intel Core 2 Quad Q6600

7Zip compressing/decompressing speed (1 thread) benchmark

Longer is better <MBRAMVID
100%111
77.3%111
76.8%221

WinRAR compressing/decompressing speed benchmark

Longer is better <MBRAMVID
100%111
99.0%221
84.9%111

CPUIDs

The table below compares two random CPUID records for Intel Core 2 Duo E8400 and Intel Core 2 Quad Q6600 microprocessors, that were submitted to our CPUID database. Please note that different steppings of Intel processors, identified by S-spec numbers or CPUID, may have slightly different features. For that reason the comparison table below only applies to CPUs with specific S-Spec number / CPUID.

  CPUID 1 CPUID 2
ManufacturerIntel
CPU FamilyCore 2 DuoCore 2 Quad
Model / Processor NumberE84002.40 GHz
Frequency 2397 MHz
CWID version0.20.3
Part numberEU80570PJ0806MHH80562PH0568M
S-Spec / Stepping CodeSLAPLSL9UM
 
General information
VendorGenuineIntel
Processor name (BIOS)Intel(R) Core(TM)2 Duo CPU E8400 @ 3.00GHzIntel(R) Core(TM)2 Quad CPU @ 2.40GHz
Cores24
Logical processors24
Processor typeOriginal OEM Processor
CPUID signature106766F7
Family 6 (06h)
Model23 (017h)15 (0Fh)
Stepping 6 (06h) 7 (07h)
TLB/Cache details64-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
3rd-level cache: 4-MB, 16-way set associative, 64-byte line size (Intel Xeon processor MP, Family 0Fh, Model 06h), 2nd-level cache: 4-MB, 16-way set associative, 64-byte line size
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: Associativity8-way set associative
L1 data: Line size64 bytes
L1 data: Size32 KB
L1 instruction: Associativity8-way set associative
L1 instruction: Line size64 bytes
L1 instruction: Size32 KB
L2: Associativity16-way set associative
L2: Line size64 bytes
L2: Size6 MB4 MB
 
Instruction set extensions
MMX+
SSE+
SSE2+
SSE3+
SSE4.1+-
SSSE3+
 
Additional instructions
CLFLUSH+
CMOV+
CMPXCHG16B+
CMPXCHG8B+
FXSAVE/FXRSTORE+
MONITOR/MWAIT+
SYSENTER/SYSEXIT+
 
Major features
64-bit / Intel 64+
Enhanced SpeedStep+
Intel Trusted Execution technology+-
Intel Virtualization+
NX bit/XD-bit+
On-chip Floating Point Unit+
 
Other features
36-bit page-size extensions+
64-bit debug store+
Advanced programmable interrupt controller+
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+
Self-snoop+
Thermal monitor+
Thermal monitor 2+
Thermal monitor and software controlled clock facilities+
Time stamp counter+
Virtual 8086-mode enhancements+
xTPR Update Control+
+ - feature is supported
- - feature is not supported
Features, not supported by all processors in the table, are not displayed

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