Core 2 Duo E6400 vs Core 2 Quad Q6700

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Aggregate performance score

Core 2 Quad Q6700
2007
4 cores / 4 threads, 105 Watt
1.32
+169%
Core 2 Duo E6400
2006
2 cores / 2 threads, 65 Watt
0.49

Core 2 Quad Q6700 outperforms Core 2 Duo E6400 by a whopping 169% based on our aggregate benchmark results.

Primary details

Comparing Core 2 Quad Q6700 and Core 2 Duo E6400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking22662902
Place by popularitynot in top-100not in top-100
Market segmentDesktop processorDesktop processor
Power efficiency1.310.71
Architecture codenameKentsfield (2007)Conroe (2006−2007)
Release dateApril 2007 (17 years ago)July 2006 (18 years ago)

Detailed specifications

Core 2 Quad Q6700 and Core 2 Duo E6400 basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)2 (Dual-core)
Threads42
Base clock speed2.66 GHz2.13 GHz
Boost clock speed2.67 GHz2.13 GHz
Bus rate1066 MHz1066 MHz
L1 cache64K (per core)64 KB
L2 cache8 MB (shared)2 MB
L3 cache0 KB0 KB
Chip lithography65 nm65 nm
Die size2x 143 mm2143 mm2
Maximum core temperatureno data61 °C
Maximum case temperature (TCase)62 °Cno data
Number of transistors582 million291 million
64 bit support++
Windows 11 compatibility--
VID voltage range0.85V-1.5V0.85V-1.5V

Compatibility

Information on Core 2 Quad Q6700 and Core 2 Duo E6400 compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration11
SocketLGA775LGA775,PLGA775
Power consumption (TDP)105 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q6700 and Core 2 Duo E6400. You'll probably need this information if you require some particular technology.

Enhanced SpeedStep (EIST)++
Turbo Boost Technology--
Hyper-Threading Technology--
Idle States++
Thermal Monitoring++
Demand Based Switching--
FSB parity--

Security technologies

Core 2 Quad Q6700 and Core 2 Duo E6400 technologies aimed at improving security, for example, by protecting against hacks.

TXT--
EDB++

Virtualization technologies

Virtual machine speed-up technologies supported by Core 2 Quad Q6700 and Core 2 Duo E6400 are enumerated here.

VT-x++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core 2 Quad Q6700 and Core 2 Duo E6400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR1, DDR2, DDR3DDR1, DDR2, DDR3

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Core 2 Quad Q6700 1.32
+169%
Core 2 Duo E6400 0.49

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Core 2 Quad Q6700 2097
+169%
Core 2 Duo E6400 780

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Core 2 Quad Q6700 298
+27.9%
Core 2 Duo E6400 233

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Core 2 Quad Q6700 824
+120%
Core 2 Duo E6400 374

Gaming performance

Pros & cons summary


Performance score 1.32 0.49
Physical cores 4 2
Threads 4 2
Power consumption (TDP) 105 Watt 65 Watt

Core 2 Quad Q6700 has a 169.4% higher aggregate performance score, and 100% more physical cores and 100% more threads.

Core 2 Duo E6400, on the other hand, has 61.5% lower power consumption.

The Core 2 Quad Q6700 is our recommended choice as it beats the Core 2 Duo E6400 in performance tests.


Should you still have questions on choice between Core 2 Quad Q6700 and Core 2 Duo E6400, ask them in Comments section, and we shall answer.

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Intel Core 2 Quad Q6700
Core 2 Quad Q6700
Intel Core 2 Duo E6400
Core 2 Duo E6400

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


4.5 144 votes

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3.4 151 vote

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Questions & comments

Here you can ask a question about Core 2 Quad Q6700 or Core 2 Duo E6400, agree or disagree with our judgements, or report an error or mismatch.