Core 2 Quad Q8400s vs Core i7-740QM

Primary details

Comparing Core i7-740QM and Core 2 Quad Q8400s processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2368	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	2.43	no data
Architecture codename	Clarksfield (2009−2010)	Yorkfield (2007−2009)
Release date	22 June 2010 (14 years ago)	19 April 2009 (15 years ago)
Launch price (MSRP)	$546	no data

Detailed specifications

Core i7-740QM and Core 2 Quad Q8400s 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)	4 (Quad-Core)
Threads	8	4
Base clock speed	1.73 GHz	2.66 GHz
Boost clock speed	2.93 GHz	0.67 GHz
Bus type	DMI 1.0	no data
Bus rate	2.5 GT/s	1333 MHz
Multiplier	13	no data
L1 cache	256 KB	64 KB (per core)
L2 cache	1 MB	4 MB (shared)
L3 cache	6 MB (shared)	0 KB
Chip lithography	45 nm	45 nm
Die size	296 mm2	2x 82 mm2
Maximum core temperature	100 °C	no data
Maximum case temperature (TCase)	no data	76 °C
Number of transistors	774 million	456 million
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	no data	0.85V-1.3625V

Compatibility

Information on Core i7-740QM and Core 2 Quad Q8400s 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	FCLGA775,LGA775
Power consumption (TDP)	45 Watt	65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-740QM and Core 2 Quad Q8400s. 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

Security technologies

Core i7-740QM and Core 2 Quad Q8400s technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	-
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-740QM and Core 2 Quad Q8400s 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 i7-740QM and Core 2 Quad Q8400s. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1066, DDR3-1333	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

On certain motherboards (Chipset feature)

Peripherals

Specifications and connection of peripherals supported by Core i7-740QM and Core 2 Quad Q8400s.

PCIe version	2	2.0
PCI Express lanes	16	no data

Pros & cons summary

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Recency	22 June 2010	19 April 2009
Threads	8	4
Power consumption (TDP)	45 Watt	65 Watt

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Should you still have questions on choice between Core i7-740QM and Core 2 Quad Q8400s, ask them in Comments section, and we shall answer.

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