Core 2 Duo E4400 vs Core 2 Quad Q6700

Primary details

Comparing Core 2 Quad Q6700 and Core 2 Duo E4400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2150	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.76	no data
Market segment	Desktop processor	Desktop processor
Architecture codename	Kentsfield (2007)	Allendale (2006−2009)
Release date	April 2007 (17 years ago)	July 2007 (17 years ago)
Current price	$41	$52

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core 2 Quad Q6700 and Core 2 Duo E4400 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 cores	4 (Quad-Core)	2 (Dual-core)
Threads	4	2
Base clock speed	2.66 GHz	2 GHz
Boost clock speed	2.67 GHz	2 GHz
L1 cache	64K (per core)	64 KB
L2 cache	8 MB (shared)	2 MB
L3 cache	0 KB	0 KB
Chip lithography	65 nm	65 nm
Die size	2x 143 mm2	111 mm2
Maximum core temperature	62 °C	L2=61 °C, M0=73 °C
Maximum case temperature (TCase)	62 °C	no data
Number of transistors	582 million	167 million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No
VID voltage range	0.85V-1.5V	0.85V-1.5V

Compatibility

Information on Core 2 Quad Q6700 and Core 2 Duo E4400 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 configuration	1	1
Socket	LGA775	LGA775
Power consumption (TDP)	105 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Quad Q6700 and Core 2 Duo E4400. You'll probably need this information if you require some particular technology.

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

Security technologies

Core 2 Quad Q6700 and Core 2 Duo E4400 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 E4400 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 E4400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR1, DDR2, DDR3

DDR1, 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.

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Pros & cons summary

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Physical cores	4	2
Threads	4	2
Power consumption (TDP)	105 Watt	65 Watt

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Should you still have questions on choice between Core 2 Quad Q6700 and Core 2 Duo E4400, ask them in Comments section, and we shall answer.

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