Core i5-4340M vs Core i7-2840QM

General info

Comparing Core i7-2840QM and Core i5-4340M processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	1642	1735
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Core i5
Architecture codename	Sandy Bridge (2011−2013)	Haswell (2013−2015)
Release date	4 September 2011 (12 years ago)	19 January 2014 (10 years ago)
Launch price (MSRP)	no data	$266
Current price	no data	$200 (0.8x MSRP)

Technical specs

Core i7-2840QM and Core i5-4340M 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	4
Base clock speed	no data	2.9 GHz
Boost clock speed	2.4 GHz	3.6 GHz
Bus support	4 × 5 GT/s	no data
L1 cache	256 KB	128 KB
L2 cache	1 MB	512 KB
L3 cache	8 MB	3 MB
Chip lithography	32 nm	22 nm
Die size	216 mm2	130 mm2
Maximum core temperature	no data	100 °C
Number of transistors	1160 Million	960 Million
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	No	No

Compatibility

Information on Core i7-2840QM and Core i5-4340M 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	Socket G2	FCPGA946
Power consumption (TDP)	45 Watt	37 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-2840QM and Core i5-4340M. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
FMA	+	no data
AVX	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	no data	2.0
Hyper-Threading Technology	no data	+
TSX	no data	-
Thermal Monitoring	no data	+
Status	no data	Discontinued

Security technologies

Core i7-2840QM and Core i5-4340M technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	no data	+
Secure Key	no data	+
Identity Protection	no data	+
Anti-Theft	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-2840QM and Core i5-4340M are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-2840QM and Core i5-4340M. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	no data	DDR3
Maximum memory size	32 GB	32 GB
Max memory channels	no data	2
Maximum memory bandwidth	25.598 GB/s	25.6 GB/s
ECC memory support	no data	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 3000	Intel HD Graphics 4600
Max video memory	no data	2 GB
Quick Sync Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.25 GHz
InTru 3D	no data	+

Graphics interfaces

Available interfaces and connections of Core i7-2840QM and Core i5-4340M integrated GPUs.

Number of displays supported	no data	3
eDP	no data	+
DisplayPort	no data	+
HDMI	no data	+

Graphics image quality

Maximum display resolutions supported by Core i7-2840QM and Core i5-4340M integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	3840x2160@60Hz
Max resolution over DisplayPort	no data	3840x2160@60Hz
Max resolution over VGA	no data	2880x1800@60Hz

Graphics API support

APIs supported by Core i7-2840QM and Core i5-4340M integrated GPUs, sometimes API versions are included.

DirectX	no data	11.2/12
OpenGL	no data	4.3

Peripherals

Specifications and connection of peripherals supported by Core i7-2840QM and Core i5-4340M.

PCIe version	no data	3
PCI Express lanes	no data	16

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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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 i7-2840QM outperforms Core i5-4340M by 14% based on our aggregated benchmark results.

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Advantages and disadvantages

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Performance score	2.46	2.16
Integrated graphics card	0.66	1.83
Recency	4 September 2011	19 January 2014
Physical cores	4	2
Threads	8	4
Chip lithography	32 nm	22 nm
Power consumption (TDP)	45 Watt	37 Watt

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Should you still have questions on choice between Core i7-2840QM and Core i5-4340M, ask them in Comments section, and we shall answer.

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