Core 2 Duo E4300 vs Core i7-840QM

Primary details

Comparing Core i7-840QM and Core 2 Duo E4300 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2301	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Power efficiency	2.59	no data
Architecture codename	Clarksfield (2009−2010)	Allendale (2006−2009)
Release date	22 June 2010 (14 years ago)	July 2006 (18 years ago)
Launch price (MSRP)	$568	no data

Detailed specifications

Core i7-840QM and Core 2 Duo E4300 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	8	2
Base clock speed	1.86 GHz	1.8 GHz
Boost clock speed	3.2 GHz	1.8 GHz
Bus type	DMI 1.0	no data
Bus rate	2.5 GT/s	800 MHz
Multiplier	14	no data
L1 cache	256 KB	64 KB
L2 cache	1 MB	2 MB
L3 cache	8 MB (shared)	0 KB
Chip lithography	45 nm	65 nm
Die size	296 mm2	111 mm2
Maximum core temperature	100 °C	61 °C
Number of transistors	774 million	167 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.5V

Compatibility

Information on Core i7-840QM and Core 2 Duo E4300 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 (Uniprocessor)	1
Socket	FCPGA988,PGA988	LGA775
Power consumption (TDP)	45 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-840QM and Core 2 Duo E4300. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	no data
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	+	-
Hyper-Threading Technology	+	-
Idle States	+	+
Thermal Monitoring	+	+
Demand Based Switching	no data	-
PAE	36 Bit	no data
FSB parity	no data	-

Security technologies

Core i7-840QM and Core 2 Duo E4300 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-840QM and Core 2 Duo E4300 are enumerated here.

VT-d	+	no data
VT-x	+	-
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-840QM and Core 2 Duo E4300. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21.335 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

None

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-840QM and Core 2 Duo E4300.

PCIe version	2	no data
PCI Express lanes	16	no data

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	8	2
Chip lithography	45 nm	65 nm
Power consumption (TDP)	45 Watt	65 Watt

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Should you still have questions on choice between Core i7-840QM and Core 2 Duo E4300, ask them in Comments section, and we shall answer.

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